Home Page World War II Armed Forces — Orders of Battle and Organizations Last Updated 24.11.2014
Imperial Japanese Navy
Converted Submarine Chasers
In cooperation with Jeff Donahoo
The format for names is Japanese style: rank; last name, first name; Japanese name in Kaji;
(and in brackets the officer's graduating class of the Naval Academy at Etajima, if applicable).
(M) Behind the name indicates a merchant marine (civilian) officer.
Rank as was at the date he took command, whether as supervisor or captain.
If an officer is shown as being in command before the ship was commissioned, he was Chief Equipping Officer, becoming Commanding Officer on the date the ship was commissioned.
Dates are given thus: day.month.year
Commanders marked with * are known to have died.
Akakura Maru No. 5    第五赤倉丸  
   Builder: Tonoura Zosen
   Owner: Mitsui Kinkai Kisen K.K.  
   Call Sign: JUHQ  
   Official Number: 48568  
   Laid Down: ?
   Launched: ?
   Completed (245 GRT): 05.08.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 25.01.1945
   Commanding Officers:  
      ? ?
Akitsu Maru    秋津丸  
   Builder: Osaka Tekkosho, Innoshima Kojo
   Owner: Nippon Suisen KK  
   Call Sign: ?  
   Official Number: 45489  
   Laid Down: ?
   Launched: 01.12.1938
   Completed (97 GRT): 15.12.1938
   Requisitioned: 05.10.1940
   Service:  
      ? ?
   Fate: Sunk 12.10.44 by aircraft of US Navy TF 38 off Taiwan.  
   Removed from Navy List: 10.12.1944
   Commanding Officers:  
      ? ?
Amagi Maru    天城丸  
   Builder: Mitsubishi Zosen, Kobe Zosensho
   Owner:    Shizuoka Ken  
   Call Sign: JBAH  
   Official Number: 37774  
   Laid Down: 14.12.1932
   Launched: 01.06.1933
   Completed (49 GRT): 31.08.1933
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 10.08.44
   Removed from Navy List: 10.08.1944
   Commanding Officers:  
      ? ?
Ayukawa Maru    鮎川丸  
   Builder: Harada Zosen, Osaka
   Owner: Ayukawa Hosei KK  
   Call Sign: JLCI  
   Official Number: 31165  
   Laid Down: ?
   Launched: 01.09.1925
   Completed (198 GRT): ?
   Requisitioned: 15.10.1940
   Service:  
      ? ?
   Fate: Sunk 18.02.45 by USS Dortch (DD-670) NW of Iwo Jima.  
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      Resv Lt Takao Masayoshi高尾正義12.41–7.42
      Resv Lt(jg) Tsuaki Takahiko津穐孝彦04.42–23.11.42
      Resv Lt Sato佐藤忠登23.11.42–06.02.43
      Resv Lt(jg) Norisue Minoru則末 實06.02.43–10.43
      Resv Lt Tanaka Nobuo田中房男10.43–26.12.43
      Lt Ito Minoru伊藤 實26.12.43–05.44
      Resv Lt Watanabe Masayoshi渡邊正好05.44–10.05.44
      Resv Lt Maekawa Shouji前川正次10.05.44–08.44
      Mid Ando Kensaku安藤健作08.44–18.02.45
Bandai Maru No. 2    第二萬代丸  
   Builder: [Shimo Ono ?]
   Owner: Mitsui Kinkai KK  
   Call Sign: JAUU  
   Official Number: 51354  
   Laid Down: ?
   Launched: 01.12.1943
   Completed (233 GRT): 29.08.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Bandai Maru No. 3    第三萬代丸  
   Builder: [Shimo Ono ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JAVU  
   Official Number: 51355  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (233 GRT): 29.08.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: Sunk 13.08.45.
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Banshu Maru No. 53    第五十三播州丸 
   Builder: Teikoku Kisen Toba Zosensho
   Owner: KK Hayashikane Shoten  
   Call Sign: JNYA  
   Official Number: 27639  
   Laid Down: ?
   Launched: 01.09.1920
   Completed (267 GRT): ?
   Requisitioned: 05.10.1940
   Service:  
      ? ?
   Fate: Sunk 30.07.45 by aircraft of US Navy TF 38 at Obama, Honshu.  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Narita Akio成田秋男12.41–01.42
      Resv Lt(jg) Michinaga Hiroshi道永 宏01.42–04.42
      Resv Lt Fujii Chouji藤井長治04.42–09.06.42
      Resv Lt Ibuki Norishige雪吹周重09.06.42–09.42
      Resv Lt Kamano Nagayoshi釜野長義09.42–02.07.43
      Resv Lt Uyama Misao魚山 操02.07.43–07.43
      Resv Lt(jg) Noda Karoka野田嘉六07.43–10.43
      Lt Nakayama Tadao中山唯男10.43–01.06.44
      Lt Igarashi Shounohuke五十嵐正之助01.06.44–07.44
      Lt Morisawa Ikuo森沢郁夫07.44–16.10.44
      Resv Lt Ueyanagi Risaburo上柳利三郎16.10.44–17.10.44
      Lt Yamamoto Junichi山本順一17.10.44–
Bunzan Maru    文山丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUFM  
   Official Number: 45444  
   Laid Down: ?
   Launched: 01.11.1938
   Completed (97 GRT): 25.11.1938
   Requisitioned: 15.10.1940
   Service:  
      ? ?
   Fate: Sunk 15.07.45 by aircraft of US Navy TF 38 at Hachinohe, Honshu  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Spec Duty Lt(jg) Sugita Eikichi杉田榮吉01.09.41–01.06.42
      Resv Lt Kusegawa Shinji久瀬川晋二01.06.42–06.43
      Resv Lt(jg) Sugawara Tatsuo菅原辰雄06.43–04.08.43
      Lt Kobayashi Hiroo小林博夫04.08.43–19.08.44
      Mid Takeda Osamu武田長治19.08.44–04.02.45
      Mid Kaeriyama Tatsue帰山辰江04.02.45–15.07.45
Byoritsu Maru    苗栗丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 44501  
   Laid Down: ?
   Launched: 01.03.1938
   Completed (99 GRT): 25.05.1938
   Requisitioned: 20.12.1941
   Service:  
      ? ?
   Fate: Sunk 16.07.45 by mine laid by US Navy TF 58 off Chongjin, Korea.  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Kuhara Masahiko久原正彦05.42–
Chikuto Maru    竹東丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWBJ  
   Official Number: 39745  
   Laid Down: ?
   Launched: 01.11.1934
   Completed (89 GRT): 24.12.1934
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 29.03.45 by aircraft of US Navy TF 58 in Kagoshima Nay, Kyushu.  
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Chikyu Maru    地久丸 
   Builder: [Sizuoka ?]
   Owner: Nippon Suisan KK  
   Call Sign: JUHJ  
   Official Number: 39718  
   Laid Down: 12.05.1934
   Launched: 19.07.1934
   Completed (88 GRT): 18.09.1934
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 22.04.45 by US aircraft off Toshijima.  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Chinzei Maru    鎭西丸  
   Builder: Mihara Zosen Tekkosho
   Owner: Fukuoks Ken  
   Call Sign: ?  
   Official Number: 35480  
   Laid Down: ?
   Launched: 01.08.1929
   Completed (62 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 12.09.44  
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Chitose Maru    千年丸  
   Builder: [Osaka ?]
   Owner: Aichi Ken  
   Call Sign: ?  
   Official Number: 28221  
   Laid Down: ?
   Launched: 01.10.1921
   Completed (58 GRT): ?
   Requisitioned: 15.05.1944
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 20.07.1944
   Commanding Officers:  
      ? ?
Chokai Maru No. 7    第七鳥海丸  
   Builder: [Kuchinotsu, Nagasaki ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEPW  
   Official Number: 53088  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (248 GRT): 19.09.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Chokai Maru No. 8    第八鳥海丸  
   Builder: [Sakai, Tottori ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JVZS  
   Official Number: 51447  
   Laid Down: ?
   Launched: 01.10.1943
   Completed (238 GRT): 13.04.1944
   Requisitioned: 05.06.1945
   Service:  
      Kure Naval District 05.06.45–
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Chokai Maru No. 9    第九鳥海丸  
   Builder: [Tonoe, Tottori ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JDCU  
   Official Number: 51450  
   Laid Down: ?
   Launched: 01.10.1943
   Completed (239 GRT): 26.04.1944
   Requisitioned: 05.06.1945
   Service:  
      Kure Naval District 05.06.45–
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Choun Maru No. 15    第十五長運丸 
   Builder: Fujinagata Zosensho
   Owner: Nagasaki Godo Unso KK  
   Call Sign: ?  
   Official Number: 39499  
   Laid Down: ?
   Launched: 01.09.1934
   Completed (96 GRT): ?
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Suzuki Kuranosuke鈴木倉之助12.41–03.08.42
      CWO Yamada山田壽晴03.08.42–05.43
      Resv Lt Takaya Tadashi高谷 正05.43–07.43
      CWO Sadakata Misao定方 操07.43–08.43
      CWO Yamada山田壽晴08.43–09.43
      CWO Katagi Souji方木宗治09.43–10.43
      Resv Lt Ninomiya Jinsaku二宮仁作10.43–11.43
      Lt(jg) Ota Shigeo太田重雄11.43–02.44
      CWO Kawamura Sachika河村幸香02.44–09.44
      CWO Kuroda Soukichi黒田宗吉09.44–
Choun Maru No. 16    第十六長運丸 
   Builder: Fujinagata Zosensho
   Owner: Nagasaki Godo Unso KK  
   Call Sign: JCJI  
   Official Number: 40083  
   Laid Down: ?
   Launched: 01.04.1935
   Completed (95 GRT): ?
   Requisitioned: 20.09.1941
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 01.06.1946
   Commanding Officers:  
      Lt(jg) Fujiwara Kakuzo藤原格三27.03.45–
Daito Maru No. 1    第一大東丸  
   Builder: Akers Mekaniske Verksted, Oslo, Norway
   Owner: KK Hayashikane Shoten  
   Call Sign: JJBH  
   Official Number: 11093  
   Laid Down: ?
   Launched: 01.09.1907
   Completed (109 GRT): ?
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Mid Eto Toraichi江藤寅一03.02.42–4.43
      CWO Morita Minoru森田 稔4.43–11.43
      CWO Suzuki Kuranosuke鈴木倉之助11.43–09.44
      CWO Honna Tsuneo本名常夫09.44–02.45
      CWO Mori Kajiro森 戈二郎02.45–
Daiton Maru    大屯丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 41280  
   Laid Down: ?
   Launched: 01.11.1935
   Completed (88 GRT): 13.02.1936
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: Sunk 28.03.45  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Matsunami Takejiro松波竹二郎01.42–05.43
      CWO Takimoto Tameshiro瀧本為四郎05.43–06.43
      CWO Tanioka Sadanori谷岡貞範06.43–09.43
      CWO Matsumura Kenji松村賢治09.43–
Ebisu Maru    蛭子丸  
   Builder: Chosen Oryokko Zosensho
   Owner: Yoshitaro Masuda  
   Call Sign: JVTH  
   Official Number: 28424  
   Laid Down: ?
   Launched: 01.10.1919
   Completed (175 GRT) ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Eifu Maru    英風丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JSPA  
   Official Number: 29328  
   Laid Down: ?
   Launched: 01.11.1923
   Completed (216 GRT): 01.11.1923
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 12.09.44  
   Removed from Navy List: 10.12.1944
   Commanding Officers:  
      ? ?
Ensui Maru    鹽水丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nppon Suisan KK  
   Call Sign: ?  
   Official Number: 45445  
   Laid Down: ?
   Launched: 01.11.1938
   Completed (97 GRT): 25.11.1938
   Requisitioned: 05.10.1940
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Fuji Maru    富士丸  
   Builder: Mitsubishi Zosen Kobe Zosensho
   Owner: Osaka Shosen KK  
   Call Sign: JUFH  
   Official Number: 37065  
   Laid Down: 20.11.1931
   Launched: 22.02.1932
   Completed (703 GRT): 28.03.1932
   Requisitioned: 10.12.1942
   Service:  
      ? ?
   Fate: Sunk 25.03.45 by USS Tirante (SS-420) (31°09'N 130°31'E)  
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      Resv Lt Nagata Yatsuka永田八束02.43–20.04.43
      Resv Lt Azma Jintsuo東 實夫20.04.43–08.43
      Lt Araya Taketsugu新家武継08.43–05.44
      Resv Lt Takeshita Toyokazu竹下豊一05.44–03.45
      Lt Yatsuka Taizo八束大造03.45–25.03.45
Fukugawa Maru No. 7    第七富久川丸 
   Builder: [Ishinomaki ?]
   Owner: Kawasaki Kinkai Kisen KK  
   Call Sign: JUJC  
   Official Number: 51574  
   Laid Down: ?
   Launched: 01.01.1944
   Completed (270 GRT) ?
   Requisitioned: 05.06.1945
   Service:  
      Maizuru ND 05.06.45–31.08.45
   Fate: Sunk 31.08.45.  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Fukushima Maru    福志滿丸  
   Builder: Nylands Mekaniske Verksted
   Owner: KK Hayashikane Shoten  
   Call Sign: JOSE  
   Official Number: 10843  
   Laid Down: ?
   Launched: ?
   Completed (109 GRT): ?
   Requisitioned: 01.02.1942
   Service:  
      Kure ND 01.02.42–10.04.42
      Saeki Guard 10.04.42–
   Fate: Sunk 18.04.45  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
    Resv Lt(jg) Nakao Tadonobu中尾忠信03.42–04.42
    Resv Ens Noda Karoku野田嘉六04.42–05.42
    Resv Lt(jg) Nishiwaki Takeo西脇武男05.42–10.42
    Resv Lt(jg) Murakami Haruo村上治夫10.42–03.43
    Resv Lt(jg) Kuroiso Eizo黒磯瑛三03.43–04.43
    CWO Kunimoto Masao國本政雄04.43–09.43
    CWO Kawakami Goro川上五六09.43–09.44
    CWO Tanigawa Souichi谷川惣一09.44–
Fumi Maru    文丸  
   Builder: Hakodate Dock
   Owner: Taiyo Hogei KK  
   Call Sign: JPRJ  
   Official Number: 45433  
   Laid Down: ?
   Launched: 07.09.1938
   Completed (359 GRT): 10.11.1938
   Requisitioned: 12.09.1941
   Service:  
      SC Div 66, 7th Base Force, 5th Fleet 12.41–14.07.42
      SC Div 66, Chichi Jima Base Force, 5th Fleet 14.07.42–15.08.42
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.  
   Removed from Navy List: 01.08.1945
   Commanding Officers:  
      Resv Lt(jg) Noma Tatsuo野間龍雄12.09.41–03.44
      Lt Sakaki Shozo榊 正三03.44–
Fumi Maru No. 3    第三文丸  
   Builder: Hakodate Dock
   Owner: Taiyo Hogei KK  
   Call Sign: JPYJ  
   Official Number: 47678  
   Laid Down: ?
   Launched: 03.09.1940
   Completed (369 GRT): 30.11.1940
   Requisitioned: 15.08.1941
   Service:  
      SC Div 63, 6th Base Force, 4th Fleet12.41–04.03.44
      SC Div 63, 6th Base Force, Central Pacific Area Fleet04.03.44–31.03.44
   Fate: Sunk 30.01.44  
   Removed from Navy List: 31.03.1944
   Commanding Officers:  
      Resv Lt(jg) Fujii Itsuo藤井逸男15.08.41–29.09.43
      Resv Lt(jg) Nakai Saburo中井三郎29.09.43–30.01.44
Fuyo Maru    芙蓉丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisen KK  
   Call Sign:    JIYA  
   Official Number: 28730  
   Laid Down: ?
   Launched: 01.11.1922
   Completed (216 GRT): 01.12.1922
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 30.05.1947
   Commanding Officers:  
    CWO Kinoshita Tomita木下富太05.11.45–
Ganjitsu Maru No. 1    第一元日丸 
   Builder: Osaka Tekkosho Sakurajima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JQVB  
   Official Number: 33571  
   Laid Down: ?
   Launched: 01.04.1926
   Completed (216 GRT): 01.06.1926
   Requisitioned: 15.10.1941
   Service:  
      SC Div 55, 3rd Base Force, 4th Fleet 12.41–20.05.42
   Fate: Sunk 14.01.43 by USS Searaven (SS-196) E of Mindanao.  
   Removed from Navy List: 15.05.1943
   Commanding Officers:  
      Resv Lt Torizuka鳥塚壽平15.10.40–05.10.41
      Resv Lt(jg) Murata Touichi村田藤一05.10.41–14.01.43
Geiyo Maru    鯨洋丸  
   Builder: Smith's Dock & Co., Newcastle upon Tyne, Britain
   Owner: Enyo Hogei KK  
   Call Sign: JMOE  
   Official Number: 29062  
   Laid Down: ?
   Launched: 30.04.1912
   Completed (199 GRT): 05.12.1914
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: Sunk 08.08.45  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Kamata Ryonosuke鎌田亮之助03.02.42–11.42
      Resv Lt(jg) Sakata Isamu坂田 勇11.42–04.43
      CWO Higuchi Toshio樋口歳男04.43–05.43
      CWO Yamada山田壽晴05.43–12.43
      CWO Inoue Mitsuo井上三男12.43–09.44
      Mid Kubota Sadao久保田 貞夫09.44–10.44
      CWO Inoue Sueatsu井上末松10.44–
Giso Maru No. 3    第参義宗丸  
   Builder: [Kushiro ?]
   Owner:    Kuribayashi Kinkai Kisen KK  
   Call Sign: JHHK  
   Official Number: 46033  
   Laid Down: ?
   Launched: 01.10.1943
   Completed (228 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Giso Maru No. 8    第八義宗丸  
   Builder: [Kushiro ?]
   Owner: Kuribayashi Kinkai Kisen KK  
   Call Sign: JHMK  
   Official Number: 50298  
   Laid Down: ?
   Launched: 01.01.1944
   Completed (228 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Giso Maru No. 12    第十二義宗丸  
   Builder: [Muroran ?]
   Owner: Kuribayashi Kinkai Kisen KK  
   Call Sign: JUGR  
   Official Number: 49645  
   Laid Down: ?
   Launched: 01.12.1943
   Completed (238 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?  
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Giso Maru No. 15    第十五義宗丸  
   Builder: [Muroran ?]
   Owner: Kuribayashi Kinkai Kisen KK  
   Call Sign: JUNR  
   Official Number: 49654  
   Laid Down: ?
   Launched: 01.06.1944
   Completed (237 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Giso Maru No. 16    第十六義宗丸  
   Builder:[Muroran ?]
   Owner: Kuribayashi Kinkai Kisen KK  
   Call Sign: JUOR  
   Official Number: 49655  
   Laid Down: ?
   Launched: 01.06.1944
   Completed (237 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Giso Maru No. 40    第四十義宗丸  
   Builder: [Sakata ?]
   Owner: Kuribayashi Kinkai Kisen KK  
   Call Sign: JQEV  
   Official Number: 52235  
   Laid Down: ?
   Launched: 01.11.1943
   Completed (273 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: Sunk 27.07.45
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
Hakko Maru    白鴻丸  
   Builder: Fujinagata Zosensho
   Owner: Ministry of Agriculture and Forestry, Tokyo and Forestry, Tokyo  
   Call Sign: JAZE  
   Official Number: 37754  
   Laid Down: ?
   Launched: 01.04.1933
   Completed (76 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 26.01.45 by aircraft off Corregidore Island, Manila Bay.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Hakubi Maru    白眉丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JJDF  
   Official Number: 37947  
   Laid Down: 01.09.1932
   Launched: 31.10.1932
   Completed (88 GRT): 10.09.1932
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: Sunk 12.10.44.
   Removed from Navy List: 10.02.1945
   Commanding Officers:  
      ? ?
Hakusa Maru    白沙丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JWBN  
   Official Number: 46210  
   Laid Down: 03.07.1928
   Launched: 15.09.1928
   Completed (89 GRT): 13.10.1928
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Kodaira Noburo小平 東25.07.41–
      Mid Morioka Youichi守岡陽一01.45–
      ? ?
Hakusan Maru    白山丸  
   Builder: Mitsubishi Zosen Nagasaki Zosensho
   Owner: Ishikawa Ken  
   Call Sign: JVBB  
   Official Number: 32357  
   Laid Down: 16.12.1927
   Launched: 09.02.1928
   Completed (89 GRT): 21.03.1928
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 04.06.44.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Hakusan Maru No. 2 Go    第二號白山丸
   Builder: Ono Tekkosho
   Owner: Niigata Ken  
   Call Sign: JQBH  
   Official Number: 40586  
   Laid Down: 01.07.1935
   Launched: 01.11.1935
   Completed (100 GRT): 01.01.1936
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 16.06.45
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hakushu Maru    伯州丸  
   Builder: Ishiguro Zosensho
   Owner: Zenichi Adachi  
   Call Sign: JUJL  
   Official Number: 44543  
   Laid Down: 01.09.1938
   Launched: 15.12.1938
   Completed (218 GRT): 25.03.1939
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hakuyo Maru    白洋丸  
   Builder: Kawasaki Zosensho
   Owner: Ministry of Agriculture and Forestry, Tokyo  
   Call Sign: ?  
   Official Number: ?  
   Laid Down: ?
   Launched: ?
   Completed (219 GRT): 03.04.1905
   S.S  
   Requisitioned: 01.05.1944
   Service:  
      ? ?
   Fate: Sunk 15.01.45 as blockship at southern entrance to Manila Bay.
   Removed from Navy List: 28.09.1946
   Commanding Officers:  
      Lt Matsuoka Umeji松岡梅治10.09.44–
      ? ?
Hassen Maru    八仙丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK:  
   Call Sign: JDYM  
   Official Number: 44500  
   Laid Down: ?
   Launched: 01.03.1938
   Completed (99 GRT): 25.03.1938
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Spec Duty Lt(jg) Yabu Shigetaro藪 繁太郎05.42–
      ? ?
Hayabusa Maru    隼丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Oita Ken  
   Call Sign: ?  
   Official Number: 38654  
   Laid Down: 05.06.1933
   Launched: 24.07.1933
   Completed (80 GRT): 16.10.1933
   Requisitioned: 10.09.1943
   Service:  
      SC Div 112 01.10.44–09.45
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Sumishita Shinichi住下信一1944–21.07.44
      CWO Matsunaga Masayoshi松永正義21.07.44–
      ? ?
Hayatomo Maru    早鞆丸  
   Builder: Mitsubishi Zosen Kobe Zosensho
   Owner: Setsuyo Shosei KK  
   Call Sign: JMRE  
   Official Number: 30368  
   Laid Down: 15.07.1924
   Launched: 15.12.1924
   Completed (697 GRT): 26.03.1925
   Requisitioned: 10.12.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.09.1945
   Commanding Officers:  
      Lt(jg) Hirano Shuuichi平野秀一08.43–10.43
      Lt Sakano Masami坂野正己10.43–11.43
      Resv Lt Uchida Eiichi打田榮一11.43–1944
      Resv Lt Azma Jintsuo東 實夫1944–28.04.44
      Resv Lt Takeshita Toyokazu竹下豊一28.04.44–05.44
      Lt Araya Taketsugu新家武継05.44–28.05.44
      Lt Yatsuka Taizo八束大造28.05.44–25.06.44
      Lt(jg) Kobayashi Kyoutaro小林強太郎25.06.44–11.44
      Resv Lt Kaneko Susumu金子 進11.44–10.09.44
      Lt Hashimoto Masahisa橋本正久10.09.44–
      ? ?
Higo Maru    肥後丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Kumamoto Ken  
   Call Sign: JBUI  
   Official Number: 35384  
   Laid Down: 09.08.1929
   Launched: 07.10.1929
   Completed (68 GRT): 30.10.1929
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 06.11.44
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Hinan Maru    卑南丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUDM  
   Official Number: 45513  
   Laid Down: ?
   Launched: 01.01.1939
   Completed (97 GRT): 04.02.1939
   Requisitioned: 16.12.1940
   Service:  
      ? ?
   Fate: Sunk 08.10.44
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      CWO Ishii Masakichi石井政吉10.43–09.44
      Mid Oikawa Takuji及川卓爾09.44–08.10.44
      ? ?
Hino Maru No. 13    第十三日ノ丸  
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JNFR  
   Official Number: C1254  
   Laid Down: ?
   Launched: ?
   Completed (250 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hino Maru No. 14    第十四日ノ丸  
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JNGR  
   Official Number: C1255  
   Laid Down: ?
   Launched: ?
   Completed (250 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hino Maru No. 23    第二十三日ノ丸  
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JSOT  
   Official Number: C1263  
   Laid Down: ?
   Launched: ?
   Completed (250 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.08.1945
   Commanding Officers:  
      ? ?
Hino Maru No. 24    第二十四日ノ丸  
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JKEW  
   Official Number: 53183  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (244 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Hino Maru No. 25    第二十五日ノ丸
   Builder: [Funagawaminato, Akita ?]
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JDAV  
   Official Number: 51615  
   Laid Down: ?
   Launched: 01.01.1944
   Completed (247 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 05.08.45 by grounding in Bungo Suido.
   Removed from Navy List: 10.08.1945
   Commanding Officers:  
      ? ?
Hino Maru No. 31    第三十一日ノ丸  
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JKJW  
   Official Number: 53190  
   Laid Down: ?
   Launched: ?
   Completed (240 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Hino Maru No. 32    第三十二日ノ丸
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JKKQ  
   Official Number: 53191  
   Laid Down: ?
   Launched: ?
   Completed (240 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Hino Maru No. 43    第四十三日ノ丸
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JIMT  
   Official Number: 51177  
   Laid Down: ?
   Launched: ?
   Completed (258 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 07.06.45 by aircraft at Miyanpoura, Goto Island.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hino Maru No. 48    第四十八日ノ丸
   Builder: ?
   Owner: Hokkai Kinaki Kisen KK  
   Call Sign: JDCV  
   Official Number: 52187  
   Laid Down: ?
   Launched: ?
   Completed (250 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Hino Maru No. 62    第六十二日ノ丸
   Builder: [Anamizu, Ishikawa ?]
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JKBW  
   Official Number: 53180  
   Laid Down: ?
   Launched: 01.04.1944
   Completed (240 GRT); ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hino Maru No. 63    第六十三日ノ丸
   Builder: ?
   Owner: Hokkai Kinkai Kisen KK  
   Call Sign: JSPT  
   Official Number: C1274  
   Laid Down: ?
   Launched: ?
   Completed (250 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 08.08.45 by aircraft W of Koje Do (Geojedo), Korea.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Hinode Maru No. 3 Go    第三號日之出丸
   Builder: Hayashikane Shoten Tekko Zosensho
   Owner: Hinode Gyogyo KK  
   Call Sign: ?  
   Official Number: 46765  
   Laid Down: ?
   Launched: 01.01.1940
   Completed (76 GRT): ?
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Shinohira Takumi篠平卓美03.42–01.43
      CWO Shimojima Kenzo下嶋健藏01.43–05.43
      CWO Higuchi Toshio樋口歳男05.43–09.44
      CWO Ikenaga池長住藏09.44–
      ? ?
Hinode Maru No. 5    第五日之出丸
   Builder: Hayashikane Shoten Tekko Zosensho
   Owner: Hinode Gyogyo KK  
   Call Sign: ?  
   Official Number: 46766  
   Laid Down: ?
   Launched: 01.01.1940
   Completed (74 GRT): ?
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Higashiyama Michiharu東山道治03.42–08.42
      CWO Yoshitake Shoukichi吉竹昇吉08.42–11.42
      CWO Izumimoto Kiyoshi泉本 清11.42–02.43
      CWO Suzuki Kuranosuke鈴木倉之助02.43–11.43
      CWO Okawa Takeya大川武也11.43–01.44
      CWO Inagaki Mamoru稲垣 護01.44–12.44
      CWO Shimada Jiro島田二郎12.44–
      ? ?
Hinode Maru No. 15    第十五日之出丸
   Builder: Osaka Zosensho
   Owner: Hinode Gyogyo KK  
   Call Sign: JKCA  
   Official Number: 27470  
   Laid Down: ?
   Launched: 01.11.1920
   Completed (220 GRT): ?
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 19.09.44 by unknown causes in Manila Harbor.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Hokoku Maru No. 3 Go    第三號報國丸
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 38563  
   Laid Down: 23.06.1933
   Launched: 25.08.1933
   Completed (88 GRT): 30.09.1933
   Requisitioned: 01.11.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.01.1946
   Commanding Officers:  
      CWO Shigematsu Kazuo重松一夫07.42–10.08.42
      Spec Duty Lt(jg) Shimizu清水 増四郎10.08.42–10.44
      Lt Yoshida吉田日朗璽06.44–10.44
      Mid Harano Yoshio原納義夫10.44–12.44
      Lt Yoshida吉田日朗璽12.44–25.01.45
      Resv Lt Noda Karoka野田嘉六25.01.45–07.45
      Mid Yamashita Hideo山下秀男07.45–
      ? ?
Hokuto Maru      
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JIDK  
   Official Number: 41283  
   Laid Down: ?
   Launched: 01.11.1935
   Completed (89 GRT): 29.02.1936
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Inzan Maru    員山丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JDRM  
   Official Number: 44498  
   Laid Down: ?
   Launched: 01.03.1938
   Completed (99 GRT): 25.03.1938
   Requisitioned: 15.10.1940
   Service:  
      Yokosuka Defense Squadron 15.01.41–
      Tokyo Bay Sqd.Yokosuka 25.09.42–
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Kitagawa Kanematsu北川兼松10.43–9.44
      CWO Majima Yoshimasa間島吉政09.44–
      ? ?
Isshin Maru    一新丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JJBF  
   Official Number: 37945  
   Laid Down: 26.08.1932
   Launched: 04.10.1932
   Completed (88 GRT): 19.11.1932
   Requisitioned: 05.10.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Takahama高濱 綠10.43–9.44
      CWO Kuribayashi Takashi栗林 健09.44–10.44
      Spec Duty Mid Nukui Seiichi貫井精一10.44–02.45
      Spec Duty Mid Endo Mitsugu遠藤 貢02.45–
      ? ?
Kaijo Maru No. 7    第七海上丸  
   Builder: Shunsaku Tanaka
   Owner: Suekichi Morita  
   Call Sign: JYLF  
   Official Number: 21564  
   Laid Down: ?
   Launched: 01.12.1917
   Completed (174 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kaiko Maru    海光丸  
   Builder: Tokyo Ishikawajima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JNLA  
   Official Number: 28105  
   Laid Down: ?
   Launched: 01.02.1921
   Completed (233 GRT): ?
   Requisitioned: 01.02.1944
   Fate: Sunk 13.04.45 by US aircraft SE of Haiphong.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Kainan Maru    開南丸  
   Builder: Mitsubishi Jukogyo Yokohama Zosensho
   Owner: Taiwan Sotokufu  
   Call Sign: JKYG  
   Official Number: T 348  
   Laid Down: 03.04.1938
   Launched: 01.05.1939
   Completed (524 GRT): 28.09.1939
   Requisitioned: 01.07.1943
   Service:  
      ? ?
   Fate: Sunk 21.03.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Kaio Maru No. 2 Go    第二號海王丸
   Builder: Mitsubishi Zosen Nagasaki Zosensho
   Owner: Nagasaki Ken  
   Call Sign: JXKB  
   Official Number: 31395  
   Laid Down: 15.04.1926
   Launched: 28.06.1926
   Completed (63 GRT): 10.08.1926
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 29.07.44 by USS Cobia (SS-245) 30 miles N of Iwo Jima.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Kaio Maru No. 3 Go    第三號海王丸
   Builder: Hakodate Dock
   Owner: Hokkaidocho  
   Call Sign: JBUG  
   Official Number: 37969  
   Laid Down: ?
   Launched: 11.07.1933
   Completed (61 GRT): ?
   Requisitioned: 10.09.1943
   Fate: Sunk 19.07.44
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Kairyu Maru    海龍丸  
   Builder: Mitsubishi Zosen Nagasaki Zosensho
   Owner: Nagasaki Ken  
   Call Sign: JTUH  
   Official Number: 38044  
   Laid Down: 21.01.1933
   Launched: 11.04.1933
   Completed (81 GRT): 13.07.1933
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 25.05.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      CWO Kodama Kanematsu小玉兼松07.44–25.05.45
      ? ?
Kaiun Maru    海雲丸  
   Builder: Goshi Kaisha Harada Shoko
   Owner: Chosen Sotokufu  
   Call Sign: JEOG  
   Official Number: C 238  
   Laid Down: ?
   Launched: 12.12.1914
   Completed (135 GRT): ?
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kamo Maru    加茂丸  
   Builder: Tokyo Ishikawajima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JORA  
   Official Number: 27695  
   Laid Down: ?
   Launched: 30.08.1920
   Completed (234 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 18.07.44 by USS Lapon (SS-260) off Balabac Straits, Sabah.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kamui Maru No. 4    第四神威丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kise KK  
   Call Sign: JERV  
   Official Number:  
   Laid Down: ?
   Launched: 01.02.1944
   Completed (248 GRT): 31.07.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Kamui Maru No. 7    第七神威丸  
   Builder: [Tonoe, Tottori ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JDSU  
   Official Number: 51997  
   Laid Down: ?
   Launched: 01.02.1944
   Completed (238 GRT): 30.07.1944
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kamui Maru No. 8    第八神威丸  
   Builder: [Matsue ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JDIU  
   Official Number: 51456  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (260 GRT): 13.08.1944
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kamui Maru No. 9    第九神威丸  
   Builder: [Matsue ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JDJU  
   Official Number: 51457  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (260 GRT): 31.08.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 20.08.45 after grounding at Ukashima.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kanan Maru    嘉南丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 40762  
   Laid Down: ?
   Launched: 01.07.1935
   Completed (88 GRT): 15.08.1935
   Requisitioned: 12.09.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Kasasagi Maru    鵲丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Saga Ken  
   Call Sign: ?  
   Official Number: 38369  
   Laid Down: 14.03.1933
   Launched: 08.06.1933
   Completed (47 GRT): 05.09.1933
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 22.10.44 by aircraft (08°50'N, 121°06'E).
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Kasuga Maru    春日丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JAOA  
   Official Number: 26665  
   Laid Down: ?
   Launched: 01.01.1920
   Completed (219 GRT):01.21  
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 05.03.45.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Katatsu Maru      
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JUJJ  
   Official Number: 39731  
   Laid Down: 18.01.1934
   Launched: 27.09.1934
   Completed (88 GRT): 03.12.1934
   Requisitioned: 10.12.1941
   Service:  
      SC Div 62, 6th Base Force, 4th Fleet 12.41–15.02.43
   Fate: Sunk 02.12.44.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Keihin Maru    京濱丸  
   Builder: [Yokohama ?]
   Owner: Kanagawa Ken  
   Call Sign: ?  
   Official Number: 45738  
   Laid Down: ?
   Launched: 01.12.1938
   Completed (76 GRT): ?
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 14.03.45 by USS Sea Robin (SS-407) W of Salembu Island, Java Sea.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Keizan Maru No. 1    第一惠山丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: [Matsue ?]  
   Call Sign: JDKU  
   Official Number: 51458  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (260 GRT): 10.10.1944
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Keizan Maru No. 6    第六惠山丸  
   Builder: [Matsue ?]
   Owner: [Ofunato, Iwate ?]  
   Call Sign: JLKE  
   Official Number: 53718  
   Laid Down: ?
   Launched: ?
   Completed (248 GRT): 27.11.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 21.08.45
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Keizan Maru No. 7    第七惠山丸  
   Builder: Funaki Zosensho
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JLRE  
   Official Number: 53719  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (233 GRT): 21.11.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Keizan Maru No. 8    第八惠山丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JOEE  
   Official Number: 53720  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (248 GRT): 21.11.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kenkai Maru    研海丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWDJ  
   Official Number: 40107  
   Laid Down: ?
   Launched: 01.12.1934
   Completed (89 GRT): 30.01.1935
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 20.11.44.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kiku Maru    喜久丸  
   Builder: Tokyo Ishikawajima Zosensho
   Owner: Nippon Suian KK  
   Call Sign: JOQA  
   Official Number: 27715  
   Laid Down: ?
   Launched: 14.10.1920
   Completed (233 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 04.03.45 by submarine HMS Selene (P.254) off NW Sumatra.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kinsui Maru    錦水丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 39744  
   Laid Down: ?
   Launched: 01.11.1934
   Completed (89 GRT): 24.12.1934
   Requisitioned: 12.09.1941
   Service:  
      ? ?
   Fate: Sunk 09.01.45 by aircraft from US Navy TF 38 off Taiwan.
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Kintoku Maru No. 13 Go    第拾参號金德丸  
   Builder: [Kushiro ?]
   Owner: Hidejiro Homna  
   Call Sign: ?  
   Official Number: 35947  
   Laid Down: ?
   Launched: 01.09.1930
   Completed (45 GRT): ?
   Requisitioned: 10.03.1942
   Service:  
      ? ?
   Fate: Sunk 05.06.45.
   Removed from Navy List: 10.08.1945
   Commanding Officers:  
      Spec Duty Lt(jg) Hayata Kanichi早田勘一04.42–05.42
      CWO Tashiro Mitsuo田代光夫05.42–06.42
      CWO Kimura Takeshi木村 斌06.42–07.42
      CWO Taniguchi谷口鶴藏07.42–07.43
      CWO Ogawa Masaru小川 優07.43–09.43
      CWO Yoshida Tominosuke吉田富之助09.43–10.43
      CWO Toyama Ichizo戸山市三10.43–09.44
      CWO Umeda Setsuji梅田節治09.44–
      ? ?
Kiri Maru No. 2    第二桐丸  
   Builder: [Tokuyama ?]
   Owner: Nissan Kinkai Kisen KK  
   Call Sign: JKTV  
   Official Number: 52350  
   Laid Down: ?
   Launched: 01.07.1944
   Completed (272 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kiri Maru No. 3    第三桐丸  
   Builder: [Kudamatsu ?]
   Owner: Nissan Kinkai Kisen KK  
   Call Sign: JIDT  
   Official Number: 51215  
   Laid Down: ?
   Launched: 01.02.1944
   Completed (261 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kiyo Maru    紀洋丸  
   Builder: Kobeseikosho Harima Zosen Kojo
   Owner: Wakayama Ken  
   Call Sign: JICC  
   Official Number: 35185  
   Laid Down: 12.07.1929
   Launched: 01.10.1929
   Completed (127 GRT)?: 18.11.1929
   Requisitioned: 15.01.1944
   Service:  
      ? ?
   Fate: Sunk 19.03.45.
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      Mid Yamanishi Harumatsu山西春松8.10.43–05.44
      CWO Kawakami Kiichi川上喜一05.44–10.02.45
      Spec Duty Mid Kawakami Kiichi川上喜一10.02.45–04.45
      Lt Samejima Keiji (Resreve)鮫島 恵04.45–
      ? ?
Kochi Maru    高知丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Kochiken Suisan Kai  
   Call Sign: JSMK  
   Official Number: 43227  
   Laid Down: ?03.08.37
   Launched: 04.02.1938
   Completed (199 GRT): 31.03.1938
   Requisitioned: 15.01.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      CWO Kawakami Kiichi川上喜一1944–05.44
      CWO Yasui Isamu安井 勇05.44–25.05.44
      Lt(jg) Kobayashi Kyoutaro小林強太郎25.05.44–25.06.44
      Spec Duty Mid Takiguchi Kazuyuki瀧口一之25.05.44–24.01.45
      Lt(jg) Hanaoka Kiyoo花岡清夫24.01.1945
      ? ?
Kojin Maru No. 5    第五興神丸  
   Builder: [Funagawaminato, Akita ?]
   Owner: Kippon Kihansen Unko KK  
   Call Sign: JIWL  
   Official Number: 53154  
   Laid Down: ?
   Launched: 01.11.1944
   Completed: (251 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kosei Maru    こうせい丸  
   Builder: D&W Henderson, Glasgow, Britain
   Owner: Tokyowan Kisen KK  
   Call Sign: JPSO  
   Official Number: 48707  
   Laid Down: ?
   Launched: 01.07.1915
   Completed (1026 GRT): ?
   Requisitioned: 15.02.1943
   Reclassed small mine layer 21.03.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Lt Kuroki Katsumi黒木克己10.43–9.44
      Lt Sakuyama Kahei作山嘉平09.44–2.45
      Lt Shimura志村未壽夫02.45–
      ? ?
Koshun Maru    恒春丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JFDB  
   Official Number: T 133  
   Laid Down: 20.09.1927
   Launched: 24.12.1927
   Completed (88 GRT): 28.01.1928
   Requisitioned: 15.10.1940
   Returned to owners 10.06.1941
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: Sunk after grounding 22.05.45 off Yurasaki, Kyushu.
   Removed from Navy List: 10.08.1945
   Commanding Officers:  
      Resv Lt(jg) Sasaki Shinichi佐々木眞一03.42–10.42
      CWO Izumimoto Kiyoshi泉本 清10.42–11.42
      Resv Lt(jg) Ikeda Yujio池田雄次郎11.42–02.43
      CWO Izumimoto Kiyoshi泉本 清02.43–05.43
      CWO Shimojima Kenzo下嶋健藏05.43–10.44
      Spec Duty Mid Ida Tokuji伊田徳治10.44–
      ? ?
Kumi Maru      
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JNLK  
   Official Number: 34651  
   Laid Down: 12.01.1929
   Launched: 16.03.1929
   Completed (80 GRT): 10.05.1929
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: Badly damaged 06.05.45 by aircraft off Koji Do, Korea. Not repaired.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kunimi Maru No. 8    第八國見丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEPV  
   Official Number: 15.05.45  
   Laid Down: ?
   Launched: 01.01.1944
   Completed (248 GRT): 20.07.1944
   Requisitioned:  
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Kurama Maru    鞍馬丸  
   Builder: Tokyo Ishikawajima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JOPA  
   Official Number: 28460  
   Laid Down: ?
   Launched: 27.12.1921
   Completed (233 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 18.07.44 by USS Lapon (SS-260) some 150 miles NW of Jesselton, Sabah.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kuryu Maru      
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUEM  
   Official Number: 45209  
   Laid Down: ?
   Launched: 01.10.1938
   Completed (97 GRT): 25.10.1938
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Kyo Maru No. 2    第二京丸  
   Builder: Tsurumi Seitetsu Zosen
   Owner: Kyogyo Hogei KK  
   Call Sign: JMSM  
   Official Number: 45132  
   Laid Down: 25.01.1938
   Launched (340 GRT): 18.07.1938
   Completed: 27.08.1938
   Requisitioned: 16.12.1940
   Service:  
      SC Div 53, 2nd Base Force, 3rd Fleet 12.41–01.02.42
      SC Div 53 01.02.42–31.05.42
   Fate: Sunk 07.08.44 by USS Puffer (SS-268) W of Mindanao.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Lt(jg) Tsukagoshi Eijiro (Resreve)塚越英次郎16.12.40–
      ? ?
Kyo Maru No. 6    第六京丸  
   Builder: Harima Zosensho
   Owner: Kyogyo Hogei KK  
   Call Sign: JHPL  
   Official Number: 45092  
   Laid Down: 12.10.1937
   Launched: 15.01.1938
   Completed (340 GRT): 10.08.1938
   Requisitioned: 12.09.1941
   Service:  
      SC Div 60 5th Base Force 5, 4th Fleet 12.41–04.03.44
   Fate: Sunk after grounding 27.11.43 on Nambu Island, Marshall Islands.
   Removed from Navy List: 31.03.1944
   Commanding Officers:  
      Resv Lt(jg) Kawazoe Katsumi川副克己12.09.41–25.09.43
      Resv Lt Nomura Isamu野村 勇25.09.43–27.11.43
      ? ?
Kyo Maru No. 7    第七京丸  
   Builder: Harima Zosensho
   Owner: Kyogyo Hogei KK  
   Call Sign:    JHQL  
   Official Number: 45093  
   Laid Down: ?12.10.37
   Launched: 15.01.1938
   Completed (340 GRT): 10.08.1938
   Requisitioned:  
   Service:  
      SC Div 65, 6th Base Force, 4th Fleet 12.41–04.03.44
      SC Div 65, 6th Base Force, Central Pacific Area Fleet 04.03.44–31.03.44
   Fate: Sunk 26.12.44 by USS Fanning (DD-285) off Okinomisaki, Bonin Island.
   Removed from Navy List: 10.02.1945
   Commanding Officers:  
      Resv Lt(jg) Ando Hideo安藤英郎12.09.41–16.08.43
      Resv Lt Nagata Yatsuka永田八束16.08.43–
      ? ?
Kyo Maru No. 8    第八京丸  
   Builder: Harima Zosensho
   Owner: Kyogyo Hogei KK  
   Call Sign: JHTL  
   Official Number: 45128  
   Laid Down: 16.11.1937
   Launched: 16.02.1938
   Completed (340 GRT): 19.08.1938
   Requisitioned: 20.09.1941
   Service:  
      SC Div 65, 6th Base Force, 4th Fleet 12.41–04.03.44
      SC Div 65, 6th Base Force, Central Pacific Area Fleet 04.03.44–31.03.44
   Fate: Sunk 23.02.44, possibly by aircraft, at Saipan.
   Removed from Navy List: 31.03.1944
   Commanding Officers:  
      Resv Lt(jg) Ito伊藤義策20.09.41–
      ? ?
Kyo Maru No. 10    第十京丸  
   Builder: Harima Zosensho
   Owner: Kyukuyo Hogei KK  
   Call Sign: JHUL  
   Official Number: 45134  
   Laid Down: 16.11.1937
   Launched: 16.02.1938
   Completed (340 GRT): 19.08.1938
   Requisitioned: 12.09.1941
   Service:  
      SC Div 60, 5th Base Force, 4th Fleet 12.41–04.03.44
   Fate: Sunk 23.02.44, possibly by aircraft, at Saipan.
   Removed from Navy List: 31.03.1944
   Commanding Officers:  
      Resv Lt(jg) Arimura Masaaki有村正明12.09.41–01.09.42
      Resv Lt(jg) Murao Takashi村尾 敬01.09.42–
      ? ?
Kyo Maru No. 11    第十一京丸  
   Builder: Tsurumi Seitetsu Zosen
   Owner: Kyokuyo Hogei KK  
   Call Sign: JUAM  
   Official Number: 45199  
   Laid Down: 04.06.1938
   Launched: 12.08.1938
   Completed (385 GRT): 03.10.1938
   Requisitioned: 05.10.1940
   Service:  
      SC Div 53, 2nd Base Force, 3rd Fleet 12.41–01.02.42
      SC Div 53 01.02.42–31.05.42
   Fate: Sunk 02.03.42 by US aircraft in Subic Bay, Luzon.
   Removed from Navy List: 01.04.1942
   Commanding Officers:  
      Resv Lt Kawakami Isamu川上 勇15.01.41–02.03.42
      ? ?
Kyo Maru No. 12    第十二京丸  
   Builder: Tama Zosensho
   Owner: Kyogyo Hogei KK  
   Call Sign: JNKO  
   Official Number: 47659  
   Laid Down: 17.05.1940
   Launched: 03.08.1940
   Completed (344 GRT): 28.09.1940
   Requisitioned: 15.05.1941
   Service:  
      SC Div 51, 1st Base Force, 3rd Fleet 12.41–01.02.42
      SC Div 51 01.02.42–31.05.42
   Fate: Sunk 12.09.44 by aircraft off Cebu, Philippines.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      Resv Lt(jg) Ishiwata Shunichiro石渡俊一郎15.05.41–12.09.44
      ? ?
Kyo Maru No. 13    第十三京丸  
   Builder: Harima Zosensho
   Owner: Kyogyo Hogei KK  
   Call Sign: JGQM  
   Official Number: 47660  
   Laid Down: 22.05.1940
   Launched: 23.08.1940
   Completed (340 GRT): 30.09.1940
   Requisitioned: 15.05.1941
   Service:  
      SC Div 51, 1st Base Force, 3rd Fleet 12.41–01.02.42
      SC Div 51 01.02.42–31.05.42
   Fate: Sunk 26.01.45 by mine off Singapore.
   Removed from Navy List: 10.03.1945
   Commanding Officers:  
      Resv Lt(jg) Shibuya Jikichi渋谷次吉15.05.41–01.05.44
      Resv Lt Shibuya Jikichi渋谷次吉01.05.44–
      ? ?
Kyokuo Maru    旭櫻  
   Builder: Fujinagata Zosensho
   Owner: Kagoshima Ken  
   Call Sign: JEIC  
   Official Number: 36963  
   Laid Down: ?
   Launched: 01.10.1931
   Completed (70 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Mato Maru    麻豆丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 41284  
   Laid Down: ?
   Launched: 01.11.1935
   Completed (88 GRT): 29.02.1936
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: Sunk 28.03.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      CWO Okamoto Kameici岡本亀一03.42–06.42
      CWO Tashiro Mitsuo田代光夫06.42–06.43
      CWO Kobori Keiji小堀桂二06.43–09.43
      CWO Ogawa Masaru小川 優09.43–09.44
      Mid Ogawa Masaru小川 優09.44–28.03.45
      ? ?
Meigen Maru No. 16    第十六明玄丸 
   Builder: Hayashikane Shoten Tekko Zosensho
   Owner: Motoji Ichikawa  
   Call Sign: ?  
   Official Number: 42227  
   Laid Down: ?
   Launched: 01.10.1936
   Completed (72 GRT):  
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Nasu Yazo那須彌藏03.42–06.42
      CWO Kuriyama Giichi栗山儀一07.42–11.43
      CWO Kawashima川島鑛藏11.43–9.44
      CWO Umeoka Chube梅岡忠兵衛09.44–
      ? ?
Meigen Maru No. 17    第十七明玄丸 
   Builder: Hayashikane Shoten Tekko Zosensho
   Owner: Motoji Ichikawa  
   Call Sign: ?  
   Official Number: 42228  
   Laid Down: ?
   Launched: 01.10.1936
   Completed (72 GRT): ?
   Requisitioned: 01.02.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Ando Hidekichi安藤秀吉03.42–03.43
      CWO Morita Minoru森田 稔03.43–04.43
      Mid Eto Toraichi江藤寅一04.43–06.43
      CWO Kunishige Sadao國重定男06.43–09.43
      CWO Takimoto Tameshiro瀧本為四郎09.43–10.44
      Mid Higashide Yoshihiko東出義彦10.44–12.44
      CWO Takiemoto Tameshiro瀧本為四郎12.44–
      ? ?
Meiji Maru No. 2 Go    第二號明治丸 
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JHAC  
   Official Number: 36018  
   Laid Down: 07.02.1930
   Launched: 18.03.1930
   Completed (80 GRT): 16.04.1930
   Requisitioned: 20.12.1941
   Reclassed Patrol Craft 10.04.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: ?
   Commanding Officers:  
      Resv Lt(jg) Shizujima Sadao倭嶋定雄07.42–01.06.42
      Mid Iwase Iwaji岩瀬岩次01.06.42–05.44
      CWO Chizuwa Yoshitaka千頭和義高05.44–01.05.45
      Mid Chizuwa Yoshitaka千頭和義高01.05.45–
      ? ?
Miikesan Maru No. 12    第十二三池山丸 
   Builder: Mitsui Kozan Miike Seisakusho
   Owner: Miike Shosen KK  
   Call Sign: JFBP  
   Official Number:  
   Laid Down: ?
   Launched: 01.06.1941
   Completed (182 GRT): ?
   Requisitioned:  
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: ?
   Commanding Officers:  
      ? ?
Misago Maru    鶚丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Chosen Sotofuku  
   Call Sign: JMTA  
   Official Number: C1526  
   Laid Down: 08.09.1931
   Launched: 28.10.1931
   Completed (154 GRT): 15.12.1931
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 13.08.44 by USS Bluegill (SS-242) N of Cape Augustin, Mindanao.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Misago Maru No. 2    第二鶚丸  
   Builder: Harima Zosensho
   Owner: Takasago Gyogyo KK  
   Call Sign: JBOA  
   Official Number: 28016  
   Laid Down: 10.08.1920
   Launched: 18.11.1920
   Completed (265 GRT): 11.03.1921
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 02.09.44 by aircraft N of Mindanao.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      CWO Okabe岡部夘作01.05.44–02.09.44
      ? ?
Miyako Maru    宮古丸  
   Builder: Asano Zosensho
   Owner: Iwate Ken  
   Call Sign: JYFB  
   Official Number: 35683  
   Laid Down: 24.02.1930
   Launched: 30.03.1930
   Completed (78 GRT): 01.05.1930
   Requisitioned: 15.05.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Miyatake Maru No. 5 Go    五號宮嶽丸  
   Builder: Toyogoro Kamei
   Owner: Yasunori Murata  
   Call Sign: JSFM  
   Official Number: 45528  
   Laid Down: ?
   Launched: 25.01.1939
   Completed (153 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 25.02.45
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Mizuho Maru    瑞穂丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Sisan KK  
   Call Sign: JNXK  
   Official Number: 36017  
   Laid Down: 07.02.1930
   Launched: 18.03.1930
   Completed (80 GRT): 16.04.1930
   Requisitioned: 20.12.1941
   Reclassed Patrol Craft 04.04.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: ?
   Commanding Officers:  
      Resv Lt(jg) Koga Kenjiro古家乾二郎04.42–01.06.42
      Mid Karaki Genichi唐木元一01.06.42–24.01.44
      CWO Komatsu Ginji小松銀治24.01.44–01.05.45
      Mid Komatsu Ginji小松銀治01.05.45–
      ? ?
Mizukami Maru    水上丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 45505  
   Laid Down: ?
   Launched: 01.01.1939
   Completed (97 GRT): 21.01.1939
   Requisitioned: 15.10.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Sato Chiyoshi佐藤千代司14.11.41–09.08.42
      Spec Duty Ens Kato Kumanosuke加藤熊之助09.08.42–18.10.42
      Resv Lt(jg) Koyama Mitsuo小山光夫18.10.42–06.43
      CWO Oka Chiyoji岡 千代治06.43–24.06.43
      Resv Lt Sugi Tsugio杉 次男24.06.43–12.43
      Mid Sakamoto坂本伊恵信12.43–01.06.45
      Lt(jg) Yoshioka Tsuto吉岡 傳01.06.45–
      ? ?
Mogami Maru    最上丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JQOO  
   Official Number: 48638  
   Laid Down: ?
   Launched: 25.11.1940
   Completed (498 GRT): 13.07.1941
   Requisitioned: 10.09.1943
   Service:  
      ? ?
   Fate: Sunk 12.09.44 by aircraft off Cebu Iasland, Philippines.
   Removed from Navy List: 10.11.1944
   Commanding Officers:  
      ? ?
Mokuto Maru    目斗丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 45514  
   Laid Down: ?
   Launched: 01.01.1939
   Completed (97 GRT): 04.02.1939
   Requisitioned: 01.11.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 01.06.1946
   Commanding Officers:  
      ? ?
Musha Maru    霧社丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner:    Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 45203  
   Laid Down: ?
   Launched: 01.10.1938
   Completed (99 GRT): 10.10.1938
   Requisitioned: 01.11.1940
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Lt Yamaguchi Choujiro山口長次郎01.45–
      ? ?
Myoken Maru    妙見丸  
   Builder: Kajiro Harazaki
   Owner: Nobuo Kono  
   Call Sign: JIGH  
   Official Number: 34267  
   Laid Down: ?
   Launched: 01.01.1931
   Completed (173 GRT): ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 12.06.45 by aircraft at Atsuta, Honshu.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Nagato Maru    長門丸  
   Builder: Hakodate Dock
   Owner: Taiyo Hogei KK  
   Call Sign: JPHJ  
   Official Number: 42335  
   Laid Down: 01.03.1936
   Launched: 12.08.1936
   Completed (279 GRT): 24.09.1936
   Requisitioned: 10.12.1940
   Service:  
      ? ?
   Fate: Sunk 10.10.44.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      Resv Lt(jg) Ishiwata Shunichiro石渡俊一郎16.12.40–15.05.41
      ? ?
Nanho Maru    南鵬丸  
   Builder: Ichikawa Zosensho
   Owner: Taiwan Sotofuku  
   Call Sign: JKVG  
   Official Number: T 327  
   Laid Down: ?
   Launched: 01.03.1938
   Completed (122 GRT): 01.06.1938
   Requisitioned: 15.05.1944
   Service:  
      ? ?
Fate:  Sunk by aircraft from US Navy TF 38, either on 12.09.44 off Cebu or 31.03.45 off at Macassar.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Nanko Maru    南岬丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 40099  
   Laid Down: ?
   Launched: 01.12.1934
   Completed (89 GRT): 15.01.1935
   Requisitioned: 20.09.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.04.1945
   Commanding Officers:  
      ? ?
Nippon Maru No. 2 Go    第二號日本丸
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JLXF  
   Official Number: 38562  
   Laid Down: 23.06.1933
   Launched: 25.08.1933
   Completed (88 GRT): 30.09.1933
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 30.07.45 by by aircraft from US Navy TF 38 in Usami Bay.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Takayama Zenshichi高山善七23.06.42–01.11.44
      Mid Takayama Zenshichi高山善七01.11.44–02.45
      Mid Omori Yoshio大森義雄02.45–30.07.45
      ? ?
Nisshu Maru    日就丸  
   Builder: [Osaka ?]
   Owner: Karafutocho  
   Call Sign: ?  
   Official Number: 28095  
   Laid Down: ?
   Launched: 01.05.1922
   Completed (64 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Nisui Maru    二水丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JIEK  
   Official Number: 41653  
   Laid Down: ?
   Launched: 01.11.1935
   Completed (89 GRT): 20.04.1936
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: Sunk 28.03.45 by aircarft from US Navy TF 58 E of Fukushima.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      CWO Ida Tokuji伊田徳治12.41–01.42
      Resv Lt(jg) Nagatani Kazuo長谷數夫01.42–03.42
      Resv Lt(jg) Inoue Tetsuru井上哲郎03.42–10.42
      Resv Lt(jg) Matsushita Saburo松下三郎10.42–01.43
      Resv Lt Moriyama Kyo森山 協01.43–02.43
      CWO Kunimoto Masao國本政雄02.43–04.43
      Resv Lt(jg) Kuroiso Eizo黒磯瑛三04.43–06.43
      Resv Lt(jg) Takeoka Yoshio竹岡良雄06.43–10.43
      Resv Lt Sumi Shouzaburo角 省三郎10.43–02.44
      CWO Hamamoto Gentaro濱本源太郎02.44–08.44
      Mid Fujii Tomoyoshi藤井友由08.44–28.03.45
      ? ?
Nitto Maru No. 3    第三日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JHMC  
   Official Number: 37119  
   Laid Down: ?
   Launched: 01.09.1931
   Completed (90 GRT): ?
   Requisitioned: 15.10.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 20.08.1942
   Commanding Officers:  
      CWO Kodama Shigeshi児玉重志12.41–02.42
      Resv Lt(jg) Beppu Hideo別府秀夫02.42–07.42
      CWO Ida Tokuji伊田徳治07.42–20.08.42
      ? ?
Nitto Maru No. 5    第五日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: ?  
   Official Number: 37120  
   Laid Down: ?
   Launched: 01.09.1931
   Completed (90 GRT): ?
   Requisitioned: 15.10.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Nakamori Shigeru仲森 繁18.11.41–10.42
      CWO Ida Tokuji伊田徳治10.42–9.44
      CWO Mizukami Takeharu水上竹春09.44–
      ? ?
Nitto Maru No. 8    第八日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JICF  
   Official Number: 37623  
   Laid Down: ?
   Launched: 01.07.1932
   Completed (92 GRT): ?
   Requisitioned: 12.09.1941
   Service:  
      SC Div 112 01.10.44–09.45
   Fate: Sunk 19.04.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      Resv Lt(jg) Kumagaya Masamu熊谷正六12.41–07.09.42
      CWO Okamura岡村與三太07.09.42–12.09.42
      Resv Lt(jg) Nakai Saburo中井三郎12.09.42–03.43
      Resv Lt(jg) Yonehara Eiichi矢野原榮一03.43–29.07.43
      Resv Lt(jg) Kanzaki Shinzo神崎慎三29.07.43–12.43
      Mid Sakai Kouhei坂井光平12.43–23.12.43
      Mid Kobayashi Kyoutaro小林強太郎23.12.43–05.44
      Mid Yamanishi Harumatsu山西春松05.44–28.05.44
      CWO Nonobe Nobumichi野々部 信道 28.05.1944
      ? ?
Nitto Maru No. 9    第九日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JIDF  
   Official Number: 37624  
   Laid Down: ?
   Launched: 01.07.1932
   Completed (92 GRT): ?
   Requisitioned: 12.09.1941
   Service:  
      SC Div 112 01.10.44–09.45
   Fate: ?
   Removed from Navy List: 30.11.1945
   Commanding Officers:  
      Resv Lt(jg) Nagata Yatsuka永田八束12.41–22.01.43
      LResv t(jg) Yamamoto Makoto山元 誠22.01.43–02.05.43
      Mid Sugino Chuji杉野忠治02.05.43–31.05.43
      Resv Lt(jg) Nakai Saburo中井三郎31.05.43–08.43
      Resv Lt(jg) Yonehara Eiichi矢野原榮一08.43–10.43
      Lt(jg) Kujirata Kozo鯨田光三10.43–02.11.43
      Mid Ichida Shigeru市田 茂02.11.43–25.05.44
      CWO Suzuki Zensaburo鈴木善三郎25.05.44–09.44
      Lt(jg) Nakayama Kingo中山金吾09.44–25.02.45
      Lt Baba Yasuo馬場保夫25.02.45–
      ? ?
Nitto Maru No. 10    第十日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JIPF  
   Official Number: 37629  
   Laid Down: ?
   Launched: 01.08.1932
   Completed (92 GRT): ?
   Requisitioned: 10.11.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Takeda Yoshio武田吉雄12.41–01.05.43
      Lt(jg) Shimakawa Seiichi島川清一01.05.43–05.44
      CWO Uchida Kenzo内田健三05.44–10.44
      CWO Takeda Yoshio武田吉雄10.44–17.11.44
      Mid Yoshimura Ichi吉村淺市17.11.44–
Nitto Maru No. 11    第十一日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JIQF  
   Official Number: 37630  
   Laid Down: ?
   Launched: 01.08.1932
   Completed (92 GRT): ?
   Requisitioned: 10.11.1941
   Service:  
      ? ?
   Fate: Sunk 25.05.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      CWO Kato加藤12.41–02.42
      CWO Uchida Tsutae内田 傳02.42–11.42
      Lt(jg) Fujita Tadashi藤田 雅11.42–01.05.43
      Lt(jg) Shimizu Touhei清水藤平01.05.43–05.44
      CWO Nishida Saiji西田才次05.44–10.44
      CWO Ikeda Takeshi池田 猛10.44–
      Spec Duty Mid Nashida Saiji西田才次–25.05.45
Nitto Maru No. 12    第十二日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JITF  
   Official Number: 37634  
   Laid Down: ?
   Launched: 01.08.1932
   Completed (92 GRT): ?
   Requisitioned: 01.11.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.11.1945
   Commanding Officers:  
      CWO Okawa Iso大川五十雄12.41–25.12.41
      Resv Ens Sasaki Hirotada佐々木博忠25.12.41–04.42
      Resv Lt(jg) Suetake Keisuke末武圭介04.42–08.42
      Resv Lt(jg) Ehara Masahiro江原正大08.42–02.43
      Resv Lt(jg) Kuroiso Eizo黒磯瑛三02.43–03.43
      CWO Arimoto Haruji有本春二03.43–09.43
      CWO Ono Zensuke大野善助09.43–10.43
      CWO Katagi Souji片木宗治10.43–11.43
      CWO Yokota Yoshiro横田淑郎11.43–09.44
      CWO Ohara Misao小原 操09.44–
Nitto Maru No. 13    第十三日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JIUF  
   Official Number: 37635  
   Laid Down: ?
   Launched: 01.08.1932
   Completed (92 GRT): ?
   Requisitioned: 01.11.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 20.08.1942
   Commanding Officers:  
      CWO Kutose Shiro久戸瀬四郎12.41–02.42
      Resv Lt(jg) Nishiwaki Takeo西脇武男02.42–05.42
      CWO Kamogawa Zenkichi加茂川善吉05.42–
Nitto Maru No. 15    第十五日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JUAJ  
   Official Number: 39382  
   Laid Down: ?
   Launched: 01.05.1934
   Completed (96 GRT): ?
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
Nitto Maru No. 16    第十六日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: ?  
   Official Number: 39383  
   Laid Down: ?
   Launched: 01.05.1934
   Completed (96 GRT): ?
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
Nitto Maru No. 17    第十七日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JUBJ  
   Official Number: 39395  
   Laid Down: ?
   Launched: 01.06.1934
   Completed (96 GRT): ?
   Requisitioned: 12.09.1941
   Service:  
      SC Div 125 29.12.43–15.09.44
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Amako Tatsumi尼子辰美1.42–13.02.42
      Resv Lt(jg) Suetake Keisuke末武圭介13.02.42–04.42
      Resv Ens Sasaki Hirotada佐々木博忠04.42–06.42
      Resv Lt(jg) Murakami Haruo村上治夫06.42–29.12.42
      Resv Lt(jg) Nishiwaki Takeo西脇武男29.12.42–
      Lt Nishiwaki Takeo西脇武男10.01.45–
Nitto Maru No. 18    第十八日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: ?  
   Official Number: 39696  
   Laid Down: ?
   Launched: 01.06.1934
   Completed (96 GRT): ?
   Requisitioned: 12.09.1941
   Service:  
      SC Div 125 29.12.43–15.09.44
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Araki Haruji有木春二1941–02.42
      Resv Ens Kinzaki Shinzo神崎愼三02.42–03.42
      Resv Lt(jg) Omura Isao大村 勲03.42–10.01.45
      Lt Yamaguchi Hisaji山口久次10.01.45–
Nitto Maru No. 19    第十九日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JUCJ  
   Official Number: 39349  
   Laid Down: ?
   Launched: 01.08.1934
   Completed (96 GRT): ?
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 08.07.44 by aircraft at Rabaul.
   Removed from Navy List: 10.12.1944
   Commanding Officers:  
      CWO Enomoto Fumio 01.42–03.42
      CWO Yanai Jiro 03.42–10.42
      Resv Lt(jg) Sasaki Shinichi 10.42–
Nitto Maru No. 20    第二十日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: ?  
   Official Number: 39350  
   Laid Down: ?
   Launched: 01.08.1934
   Completed (96 GRT): ?
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 08.07.44 by aircraft at Rabaul.
   Removed from Navy List: 10.12.1944
   Commanding Officers:  
      CWO Ida Tokuji伊田徳治01.42–05.42
      Resv Lt(jg) Beppu Hideo別府秀夫05.42–
Nitto Maru No. 21    第二十一日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: JCGK  
   Official Number: 40676  
   Laid Down: ?
   Launched: 01.06.1935
   Completed (95 GRT): ?
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Nitto Maru No. 22    第二十二日東丸 
   Builder: Fujinagata Zosensho
   Owner: Nitto Gyogyo KK  
   Call Sign: ?  
   Official Number: 40677  
   Laid Down: ?
   Launched: 01.06.1935
   Completed (95 GRT): ?
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 09.01.45 by aircraft from US Navy TF 38 at Keelung, Taiwan.
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Nohi Maru    能肥丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JMGB  
   Official Number: 34652  
   Laid Down: 12.06.1929
   Launched: 16.03.1929
   Completed (80 GRT): 10.05.1929
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: Sunk 25.08.45.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Waki Yukio和氣幸夫25.07.41–
      CWO Furukawa Hideo古川秀雄01.45–
Nunobiki Maru    布引丸  
   Builder: Osaka Tekkosho Sakurajima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JIKA  
   Official Number: 26695  
   Laid Down: ?
   Launched: 28.02.1920
   Completed (219 GRT): 01.02.1921
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Mid Mukai Isamu向井 勇05.11.45–
Nuzan Maru    瓊山丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 44773  
   Laid Down: ?
   Launched: 01.05.1938
   Completed (99 GRT): 25.05.1938
   Requisitioned: 16.12.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Lt(jg) Kikuchi Takeshi菊地 武10.43–09.44
      Lt(jg) Shibata Tokunosuke柴田徳之助09.44–02.45
      Lt(jg) Koi Otoichi古井乙一02.45–
Ota Maru    王田丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 44771  
   Laid Down: ?
   Launched: 01.05.1938
   Completed (99 GRT): 28.05.1938
   Requisitioned: 20.12.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.04.1942
   Commanding Officers:  
      Resv Lt(jg) Nakane中根碓雄16.04.42–01.07.42
      Resv Lt(jg) Koga Kenjiro古家乾二郎01.07.42–07.42
      Spec Duty Lt(jg) Uchiyama Hirotaka内山廣隆07.42–31.05.43
      Spec Duty Lt(jg) Arai Shinpei新井眞平31.05.43–30.09.43
      CWO Kitada Daiji北田大次30.09.43–10.03.44
      CWO Higashitani Ko東谷 廣10.03.44–
Otaka Maru    大鷹丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Kochi Ken  
   Call Sign: ?  
   Official Number: 36697  
   Laid Down: 02.03.1931
   Launched: 19.05.1931
   Completed (65 GRT): 10.06.1931
   Requisitioned: 01.02.1941
   Service:  
      ? ?
   Fate: Sunk 24.10.44 at 08:20 by aircraft in Manila Bay.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Oyo Maru    旺洋丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JUIJ  
   Official Number: 39720  
   Laid Down: 23.05.1934
   Launched: 17.08.1934
   Completed (88 GRT): 18.10.1934
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: Sunk 10.05.45.
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Ranyo Maru    蘭陽丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWUJ  
   Official Number: 40761  
   Laid Down: ?
   Launched: 01.07.1935
   Completed (89 GRT): 15.08.1935
   Requisitioned: 12.09.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.08.1946
   Commanding Officers:  
      ? ?
Rikoku Maru    利國丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JWLJ  
   Official Number: 39717  
   Laid Down: ?12.05.34
   Launched: 19.07.1934
   Completed (88 GRT): 18.09.1934
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Sato Yuusuke佐藤雄亮10.43–09.44
      CWO Sakurai Hideo櫻井秀雄09.44–
Roshu Maru    鷺州丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 44502  
   Laid Down: ?
   Launched: 01.03.1938
   Completed (99 GRT): 25.03.1938
   Requisitioned: 16.12.1940
   Fate: ?
   Removed from Navy List: 20.12.1942
   Commanding Officers:  
      ? ?
Royo Maru    朗洋丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JJCF  
   Official Number: 37946  
   Laid Down: 01.09.1932
   Launched: 31.10.1932
   Completed (88 GRT): 10.09.1932
   Requisitioned: 01.02.1941
   Service:  
      ? ?
   Fate: Sunk 12.10.44.
   Removed from Navy List: 10.02.1945
   Commanding Officers:  
      ? ?
Ryojun Maru    旅順丸  
   Builder: Manshu Dock Ryojun Kojo
   Owner: Kantokyoku  
   Call Sign: JGFB  
   Official Number: K251  
   Laid Down: ?
   Launched: 20.04.1926
   Completed (123 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 26.07.44.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Ryosui Maru    陵水丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JDVM  
   Official Number: 45081  
   Laid Down: ?
   Launched: 01.07.1938
   Completed (99 GRT): 15.07.1938
   Requisitioned: 20.11.1941
   Service:  
      ? ?
   Fate: Sunk 21.04.44.
   Removed from Navy List: 10.06.1944
   Commanding Officers:  
      Spec Duty Lt(jg) Iribe Eiji入部英次7.42–21.09.42
      Spec Duty Lt(jg) Terashima Toujiro寺島藤二郎21.09.42–11.42
      Resv Lt(jg) Oyama Genshichi大源七11.42–
Ryusei Maru    龍井丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JDSM  
   Official Number: 44770  
   Laid Down: ?
   Launched (99 GRT): 01.05.1938
   Completed: 25.05.1938
   Requisitioned: 20.09.1941
   Service:  
      ? ?
   Fate: Sunk 08.11.44 by USS Queenfish (SS-393) off Uji Gunto, S of Kyushi.
   Removed from Navy List: 17.04.1945
   Commanding Officers:  
      ? ?
Sankyo Maru    三峡丸
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWAJ  
   Official Number: 39736  
   Laid Down: ?
   Launched: 01.10.1934
   Completed (89 GRT): 30.11.1944
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate unknown.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Lt(jg) Ejima Shichiro江島七郎02.45–16.04.45
      Lt(jg) Nakano Ken中野 健16.04.45–
Seki Maru No. 2    第二關丸  
   Builder: Hakodate Dock
   Owner: Taiyo Hogei KK  
   Call Sign: JPQJ  
   Official Number: 45495  
   Laid Down: ?
   Launched: 12.09.1938
   Completed (359 GRT): 22.12.1938
   Requisitioned: 20.09.1941
   Service:  
      ? ?
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 01.08.1945
   Commanding Officers:  
      Resv Lt(jg) Watanabe Masayoshi渡邊正好20.09.41–20.03.44
      Lt Azuchi Takuji 20.03.44–
Senga Maru No. 3    第三仙賀丸  
   Builder: [Saitsu, Kumamoto ?]
   Owner: Yaichi Kambara  
   Call Sign: JKHP  
   Official Number: 48095  
   Laid Down: ?
   Launched: 01.01.1918
   Completed (169 GRT):  
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Shimane Maru    島根丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Shimane Ken  
   Call Sign: JJIJ  
   Official Number: 38430  
   Laid Down: 08.12.1933
   Launched: 14.02.1934
   Completed (93 GRT): 31.03.1934
   Requisitioned: 10.09.1943
   Fate: Sunk 04.06.44.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Shimpei Maru No. 1 Go    第一號新平丸 
   Builder: Muroto Gyogyo Kumiai Dock
   Owner: Shimpei Yamamoto  
   Call Sign: JVTM  
   Official Number: 46281  
   Laid Down: ?
   Launched: 01.10.1939
   Completed (52 GRT): ?
   Requisitioned: 10.03.1942
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Hatano Toraichi波多野 寅一04.42–06.42
      CWO Okamoto Sadaichi岡本貞一06.42–09.42
      CWO Suzuki Kuranosuke鈴木倉之助09.42–02.43
      CWO Oshio Kihei小塩喜平02.43–09.44
      CWO Sasagawa Masanosuke佐々川 政之助09.44–
Shinan Maru    新安丸  
   Builder: Niigata Tekkosho
   Owner: Chosen Sotokufu  
   Call Sign: JHRG  
   Official Number: C1845  
   Laid Down: 01.08.1934
   Launched: 22.01.1935
   Completed (111 GRT): 01.06.1936
   Requisitioned: 15.05.1944
   Service:  
      ? ?
   Fate: Sunk 03.03.45 by aircraft off Yulin, Hainan Island.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Shinko Maru    新港丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUIM  
   Official Number: 41654  
   Laid Down: ?
   Launched: 01.03.1936
   Completed (88 GRT): 20.04.1936
   Requisitioned: 10.09.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Inagaki Mamoru稲垣 護12.41–01.42
      Resv Lt(jg) Goto Hiroki後藤弘明01.42–03.03.42
      CWO津々治 正春03.03.42–10.43
      CWO Honna Tsuneo本名常夫10.43–12.43
      CWO Fukuda Shunzo福田俊三12.43–01.44
      CWO Imaizumi Ikki今泉一起01.44–09.44
      CWO Osaki大崎供信09.44–
Shinyo Maru    神鷹丸  
   Builder: Tsurumi Seitetsu Zosen
   Owner: Ministy of Agriculture  
   Call Sign: JKOL  
   Official Number: 43067  
   Laid Down: 16.12.1936
   Launched: 27.02.1927
   Completed (235 GRT): 17.04.1927
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 10.04.1944
   Commanding Officers:  
      Spec Duty Mid Kuribayashi Takeshi栗林 健02.11.44–12.02.45
      CWO Kanbe Hiromasa神戸弘正12.02.45–
Shirogami Maru No. 9    第九白神丸 
   Builder: [Tonoe, Tottori ?]
   Owner: Mitsui Kinkai Kisen K.K.  
   Call Sign: JDGU  
   Official Number: 51454  
   Laid Down: ?
   Launched: 01.01.1944
   Completed (238 GRT): 19.07.1944
   Requisitioned: 01.01.1945
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Shodoshimasan Maru    小豆島山丸 
   Builder: [Shodo, Kagawa ?]
   Owner: Yamashita Kinkai Kisen KK  
   Call Sign: JJIC  
   Official Number: 53943  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (256 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      Sasebo Naval District 05.06.45–09.45
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Shoho Maru    祥鳳丸  
   Builder: Osaka Tekkosho Sakurajima Kojo
   Owner: Ministry of Agriculture and Forestry, Tokyo  
   Call Sign: JPLB  
   Official Number: 32892  
   Laid Down: ?
   Launched: 01.03.1927
   Completed (176 GRT: 20.04.1927
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 28.06.44.
   Removed from Navy List: 10.09.1944
   Commanding Officers:  
      ? ?
Shonan Maru No. 1    第一昭南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JMNM  
   Official Number: 45072  
   Laid Down: ?
   Launched: 01.05.1938
   Completed (350 GRT): 30.06.1938
   Requisitioned: 12.09.1941
   Service:  
      SC Div 54, 2nd Base Force, 3rd Fleet 12.41–10.03.42
      SC Div 53 10.03.42–01.05.43
   Fate: Sunk 14.04.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      Resv Lt(jg) Ninomiya Jinsaku二宮仁作12.09.41–
Shonan Maru No. 2    第二昭南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JMOM  
   Official Number: 45073  
   Laid Down: ?
   Launched: 01.05.1938
   Completed (350 GRT): 30.06.1938
   Requisitioned: 20.09.1941
   Service:  
      SC Div 54, 2nd Base Force, 3rd Fleet 12.41–10.03.42
      SC Div 53 10.03.42–01.05.43
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Iwata Fujiaki岩田富士秋20.09.41–25.04.43
      Resv Lt(jg) Ibuki Hideo伊吹秀雄25.04.43–
Shonan Maru No. 3     
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JMWM  
   Official Number: 45089  
   Laid Down: ?
   Launched: 25.05.1938
   Completed (350 GRT): 01.08.1938
   Requisitioned: 15.08.1941
   Service:  
      SC Div 63, 6th Base Force, 4th Fleet 12.41–04.03.44
      SC Div 63, 6th Base Force,Central Pacific Area Fleet 04.03.44–31.03.44
      SC Div 63 31.03.44–01.08.44
   Fate: Sunk 20.06.44.
   Removed from Navy List: 01.08.1944
   Commanding Officers:  
Shonan Maru No. 5    第五昭南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JMXM  
   Official Number: 45090  
   Laid Down: ?
   Launched: 25.05.1938
   Completed (350 GRT): 15.08.1938
   Requisitioned: 12.09.1941
   Service:  
      SC Div 59, 5th Base Force, 4th Fleet 12.41–10.12.42
   Fate: Sunk 23.08.44 by aircraft of US Navy TF 58 NW of Chichi Jima.
   Removed from Navy List: 10.10.1944
   Commanding Officers:  
    Resv Lt(jg) Ikeda Seigo池田省吾12.09.41–25.04.45
    Lt Nishimura Hiroshi西村 寛25.04.44–23.08.44
Shonan Maru No. 6    第六昭南丸 
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JULM  
   Official Number: 45142  
   Laid Down: ?
   Launched: 24.07.1938
   Completed (355 GRT): 18.09.1938
   Requisitioned: 20.09.1941
   Service:  
      SC Div 59, 5th Base Force, 4th Fleet 12.41–10.12.42
   Fate: Sunk 30.01.44.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Kosaka Minezo香坂峯三20.09.41–01.04.42
      Resv Lt(jg) Aoki Souichi青木正一01.04.42–30.01.44
Shonan Maru No. 7    第七昭南丸 
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUMM  
   Official Number: 45143  
   Laid Down: ?
   Launched: 03.08.1938
   Completed (355 GRT): 18.09.1938
   Requisitioned: 01.10.1941
   Service:  
      SC Div 91 12.41-01.05.43  
   Fate: Sunk 22.09.44 by aircraft form US Navy TF 38 W of Luzon.
   Removed from Navy List: 10.07.1944
   Commanding Officers:  
      Resv Lt(jg) Suzuki Kanji 01.10.41-鈴木完爾 
Shonan Maru No. 8    第八昭南丸 
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUNM  
   Official Number: 45144  
   Laid Down: ?
   Launched: 15.08.1938
   Completed (355 GRT): 24.09.1938
   Requisitioned: 10.09.1941
   Service:  
      SC Div 58, 4th Base Force, 4th Fleet 12.41–20.10.42
      SC Div 57, 4th Base Force, 4th Fleet 20.10.42–18.07.44
      SC Div 57, Yokosuka ND 18.07.44–10.08.44
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Sasaki Kiichi佐々木喜一10.09.41–11.44
      Lt Shibata Tokunosuke柴田徳之助11.44–
Shonan Maru No. 10    第十六日東丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUOM  
   Official Number: 45136  
   Laid Down: ?
   Launched: 30.06.1938
   Completed (350 GRT): 30.08.1938
   Requisitioned: 15.08.1941
   Service:  
      SC Div 64, 6th Base Force, 4th Fleet 12.41–15.02.42
   Fate: Sunk 01.02.42 by aircraft from USS Enterprise (CV-6) at Kwajalein.
   Removed from Navy List: 15.02.1942
   Commanding Officers:  
      Resv Lt(jg) Shimoyamada Fumio下山田文男15.08.41–01.02.42
Shonan Maru No. 11    第三昭南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUPM  
   Official Number: 45137  
   Laid Down: ?
   Launched: 01.06.1938
   Completed (350 GRT): 31.08.1938
   Requisitioned: 15.08.1941
   Service:  
      SC Div 64, 6th Base Force, 4th Fleet 12.41–15.02.42
      ?    15.02.42–15.03.42
      SC Div 63, 6th Base Force, 4th Fleet 15.03.42–04.03.44
      SC Div 63, 6th Base Force,Central Pacific Area Fleet 04.03.44–31.03.44
      SC Div 63 31.03.44–01.08.44
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Yoshinari Sadao吉成貞男15.08.41–
Shonan Maru No. 12    第十二昭南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JPSN  
   Official Number: 46257  
   Laid Down: ?
   Launched: 20.06.1929
   Completed: 29.09.39 (355 GRT)
   Requisitioned: 01.10.1941
   Service:  
      ? ?
   Fate: Sunk 30.04.43 at by British aircraft at Rangoon, Burma.
   Removed from Navy List: 01.07.1943
   Commanding Officers:  
      Resv Lt(jg) Inoue Hideya井上英也01.10.41–
Shonan Maru No. 15    第十五昭南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JPTN  
   Official Number: 46258  
   Laid Down: ?
   Launched: 23.06.1939
   Completed (355 GRT): 10.10.1939
   Requisitioned: 12.09.1941
   Service:  
      SC Div 57, 4th Base Force, 4th Fleet 12.41–31.03.44
   Fate: Sunk 17.02.44 by aircraft from US Navy TF 58 at Truk.
   Removed from Navy List: 31.03.1944
   Commanding Officers:  
      Resv Lt(jg) Tamai Akira玉井 章12.09.41–
Shonan Maru No. 17    第十七昭南丸 
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUNO  
   Official Number: 47836  
   Laid Down: ?
   Launched: 03.10.1940
   Completed (355 GRT): 21.11.1940
   Requisitioned: 16.12.1940
   Service:  
      SC Div 52 12.41-01.02.43  
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Yada Takeo矢田武男16.12.40–25.10.41
      Resv Lt(jg) Mori Takeshi森 武25.10.41–07.44
      Lt Tanaka Shogo田中正吾07.44–
Shotai Maru    昭代丸  
   Builder: [Osaka ?]
   Owner: Fukuoka Ken  
   Call Sign: ?  
   Official Number: 35474  
   Laid Down: ?
   Launched: 01.07.1929
   Completed (64 GRT):  
   Requisitioned: 10.06.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Showa Maru    昭和丸  
   Builder: Akers Mekaniske Verksted, Oslo, Norway
   Owner: Nippon Suisan KK  
   Call Sign: JCQC  
   Official Number: 33852  
   Laid Down: ?
   Launched: 01.05.1928
   Completed (187 GRT): ?
   Requisitioned: 15.10.1940
   Service:  
      SC Div 55, 3rd Base Force, 4th Fleet 12.41–20.05.42
   Fate: Sunk 25.09.44 [? Also listed as surrendering 02.09.45.]
   Removed from Navy List: 10.11.1944
   Commanding Officers:  
      Resv Lt Sujimoto Yasumasa杉本安政15.10.40–
      Resv Lt Nakane中根碓雄01.01.44–25.09.44
Showa Maru No. 2    第二昭和丸  
   Builder: Akers Mekaniske Verksted, Oslo, Norway
   Owner: Nippon Suisan KK  
   Call Sign: JJEC  
   Official Number: 36156  
   Laid Down: ?
   Launched: 01.01.1930
   Completed (194 GRT):  
   Requisitioned: 16.12.1940
   Service:  
      ? ?
   Fate: Sunk 29.03.45 [? Also listed as surrendering 02.09.45.]
   Removed from Navy List: 30.04.1945
   Commanding Officers:  
      Resv Lt(jg) Nakao Yuzo中尾雄三12.41–26.10.42
      Resv Lt Sudo Goro首藤五郎26.10.42–06.02.43
      Resv Lt Suenaga Masuo末永益雄06.02.43–11.02.43
      Resv Lt Uyama Misao魚山 操11.02.43–25.04.43
      Resv Lt(jg) Matsumoto Kiyoshi松本 清25.04.43–22.05.43
      Resv Lt(jg) Maekawa Shouji前川正次22.05.43–30.06.43
      Resv Lt(jg) Norisue Minoru則末 實30.06.43–11.07.43
      Resv Lt Uyama Misao魚山 操11.07.43–15.07.43
      Resv Lt Matsumoto Kiyoshi松本 清15.07.43–17.08.43
      Lt Morisawa Ikuo森澤郁夫17.08.43–01.06.44
      Lt Tamaru Masao田丸政雄01.06.44–01.45
      Lt Seko Kunijiro世古国二郎01.45–04.45
      Resv Lt Samejima Keiji鮫島 恵04.45–
Showa Maru No. 3    第三昭和丸  
   Builder: Jarlsø Verft, Tonsberg, Norway
   Call Sign: JRSJ  
   Official Number: 39662  
   Laid Down for Ballenera Espanola, Algeciras, Spain: ?
   Launched: 01.03.1926
   Completed as S/S Leslie (222 GRT):1926
   Service:  
      Bought by Hvalfangerselskapet Antarctic, Tønsberg, Norway1928
      Bought by Nippon Hogei KK. Renamed Showa Maru No. 301.03.1926
      Bought by Nippon Suizan KK1939
      Requisitioned: 05.10.1940
      SC Div 55, 3rd Base Force, 4th Fleet 15.11.40–20.05.42
      ? 1942–1944
   Fate: Sunk 26.07.44 by mine E of Kurile Islands.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Kimura Keizo 05.10.40-01.01.44 木村敬三
      Lt Takeuchi Tokuzo 01.01.44-26.07.44 竹内徳三
Showa Maru No. 5    第五昭和丸  
   Builder: Smith's Dock & Co., Middlesbrough, Britain
   Call Sign: JRRJ  
   Official Number: 39661  
   Laid Down for Ballenera Espanola, Algeciras, Spain: ?
   Launched: 29.09.1924
   Completed as S/S Galicia (219 GRT): 01.10.1924
   Service:  
      Bought by Hvalfangerselskapet Antarctic, Tønsberg, Norway1928
      Bought by Nippon Hogei KK. Renamed Showa Maru No. 5:1934
      Bought by Nippon Suizan KK1939
      Requisitioned: 05.10.1940
      SC Div 55, 3rd Base Force, 4th Fleet 12.41–20.05.42
   Fate: Sunk 30.03.44 by aircraft from US Navy TF 58 at Palau.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Sakuta Ikuzo作田郁三05.10.40–26.03.44
      Lt Doi Toshinori土居俊則26.03.44–30.03.44
Showa Maru No. 6    第六昭和丸  
   Builder: Jarlsø Verft, Tonsberg, Norway
   Call Sign: JRTJ  
   Official Number: 39663  
   Laid Down for Ballenera Espanola, Algeciras, Spain: 1925
   Launched: 01.07.1925
   Completed as S/S William Wilson (217 GRT): ?
   Service:  
      Bought by Hvalfangerselskapet Antarctic, Tønsberg, Norway1928
      Bought by Nippon Hogei KK, Tokyo. Renamed Showa Maru No. 61934
      Bought by Nippon Suisan KK1939
      Requisitioned: 16.12.1940
      SC Div 55 15.11.40–
   Fate: Sunk 06.08.43 after grounding in Naha Harbor, Okinawa.
   Removed from Navy List: 15.10.1943
   Commanding Officers:  
      Resv Lt(jg) Shibuya Jikichi渋谷次吉16.12.40–15.05.41
Shukusei Maru    淑星丸  
   Builder: Kiangnan DYd, Shanghai, China
   Owner:  
   Call Sign: JMWQ  
   Official Number:  
   Laid Down: ?
   Launched: 1934
   Completed as Chinese customs cruiser S/S Shu Hsing (470 GRT):1934
   Captured by Japanese 1937
   Requisitioned: 01.07.1943
   Service:  
      ? ?
   Fate: Sunk 26.10.43 by aircraft.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Shunyo Maru    俊鷹丸  
   Builder: Fujinagata Zosensho
   Owner: Ministry of Agriculture and Forestry, Tokyo  
   Call Sign: JAYE  
   Official Number: 37753  
   Laid Down: ?
   Launched: 01.04.1933
   Completed (76 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 26.01.45 by aircraft off Corregidor Island, Luzon.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Sobun Maru    曾文丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 45062  
   Laid Down: ?
   Launched: 01.07.1938
   Completed (99 GRT): 15.07.1938
   Requisitioned: 20.11.1941
   Service:  
      ? ?
Fate:  Badly damaged 25.03.45 by aircraft between Yakujima and Amami-O-Shima; excact fate unknown.
   Removed from Navy List: 10.01.1946
   Commanding Officers:  
      Spec Duty Lt(jg) Nagayama Tatsunosuke永山辰之助7.42–24.02.45
      Lt(jg) Akimoto Kichishi秋元吉志24.02.45–23.03.45
Sosui Maru    素水丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JKXL  
   Official Number: 43371  
   Laid Down: ?
   Launched: 01.06.1937
   Completed (88 GRT): 20.06.1937
   Requisitioned: 01.12.1941
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Ashda Sano芦田佐之20.10.43–09.44
      Spec Duty Mid Ashida Sano芦田佐之99.44–
Sozan Maru    草山丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JTMG  
   Official Number: T 210  
   Laid Down: 10.05.1932
   Launched: 11.07.1932
   Completed (86 GRT): 18.08.1932
   Requisitioned: 01.11.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      Resv Lt(jg) Kodama Goro小玉五郎01.03.42–
Suzuya Maru No. 1    第一鈴谷丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Karafutocho  
   Call Sign: JUTJ  
   Official Number: 39918  
   Laid Down: 04.08.1934
   Launched: 22.10.1934
   Completed (88 GRT): 26.12.1934
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 22.09.44 by aircraft from US Navy off San Fernando, Luzon.
   Removed from Navy List: 10.12.1944
   Commanding Officers:  
      ? ?
Suzuya Maru No. 2    第二鈴谷丸  
   Builder: Tsurumi Seitetsu Zosen
   Owner: Karafutocho  
   Call Sign: JYXJ  
   Official Number: 39930  
   Laid Down: 12.10.1935
   Launched: 03.02.1936
   Completed (68 GRT): 09.03.1939
   Requisitioned: 01.02.1944
   Fate: Sunk 22.09.44 by aircraft from US Navy TF 38 off San Fernando, Luzon.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Spec.Duty Mid Fujimura藤村鎮義23.11.45–
Suzuya Maru No. 3    第三鈴谷丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Karafutocho  
   Call Sign: JDXG  
   Official Number: 41730  
   Laid Down: 14.09.1936
   Launched (62 GRT): 26.12.1936
   Completed: 10.02.1937
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 12.10.44.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Tahei Maru No.2    第二太平丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEGV  
   Official Number: 51941  
   Laid Down: ?
   Launched: 01.11.1943
   Completed (247 GRT): 15.06.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Tahei Maru No.4    第四太平丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEIV  
   Official Number: 51943  
   Laid Down: ?
   Launched: 01.10.1943
   Completed (248 GRT): 30.06.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Tahei Maru No. 5    第五太平丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEJV  
   Official Number: 51944  
   Laid Down: ?
   Launched: 01.11.1943
   Completed (247 GRT): 26.06.1944
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Tahei Maru No.6    第六太平丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEKV  
   Official Number: 51945  
   Laid Down: ?
   Launched: 01.02.1944
   Completed (248 GRT): 20.07.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: Sunk 09.08.45.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Tahei Maru No.7    第七太平丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JELV  
   Official Number: 52216  
   Laid Down: ?
   Launched: 01.12.1943
   Completed (248 GRT): 20.07.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: Sunk 13.08.45.
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Taian Maru    大安丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JJOG  
   Official Number: T 134  
   Laid Down: 03.07.1928
   Launched: 12.10.1928
   Completed (86 GRT): 17.11.1928
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 02.05.45.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Taihei Maru No. 1    第一太平丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEFV  
   Official Number: 51940  
   Laid Down: ?
   Launched: 01.10.1943
   Completed (247 GRT): 17.07.1944
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Taiko Maru    大功丸  
   Builder: Nakata Zosensho??
   Owner: Taiyo Kaiun KK  
   Call Sign: JVHQ  
   Official Number: 48987  
   Laid Down: 03.10.1939
   Launched: 07.11.1941
   Completed (897 GRT): 23.03.1942
   Requisitioned: 15.02.1943
   Service:  
      ? ?
   Fate: Sunk 04.07.44.
   Removed from Navy List: 10.09.1944
   Commanding Officers:  
Taishin Maru    大眞丸  
   Builder: Tsurumi Seitetsu Zosen
   Owner: Karafutocho  
   Call Sign: ?  
   Official Number: 41727  
   Laid Down: 14.04.1936
   Launched: 19.06.1936
   Completed (95 GRT): 17.07.1936
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Nagao Shikaichi長尾鹿市03.45–
Takakura Maru No. 3    第三高倉丸 
   Builder: [Tonoe, Tottori ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JERI  
   Official Number: 52003  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (238 GRT): 25.06.1944
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.08.1945
   Commanding Officers:  
      ? ?
Takao Maru    高雄丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Takao Shu  
   Call Sign: JFJA  
   Official Number: T 167  
   Laid Down: ?
   Launched: 01.02.1930
   Completed (189 GRT): 02.04.1930
   Requisitioned: 15.05.1944
   Service:  
      ?
   Fate: Sunk 12.09.44.
   Removed from Navy List: 28.09.1946
   Commanding Officers:  
      ? ?
Takatsu Maru    高津丸  
   Builder: Mitsubishi Zosen Kobe Zosensho
   Owner: Osaka Shi  
   Call Sign: ?  
   Official Number: 38782  
   Laid Down: 21.12.1933
   Launched: 10.02.1934
   Completed (56 GRT): 31.03.1934
   Requisitioned: 01.12.1943
   Service:  
      SC Div 112 01.10.44–09.45
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Suzuki Zensaburo [1]鈴木善三郎1944–21.05.44
[1] Also CO of Takatsu Maru No. 2  
      CWO Aoki Minoru青木 稔21.05.44–11.44
      CWO Yamamoto Kikuji山本菊治11.44–
Takatsu Maru No. 2    第二高津丸 
   Builder: [Osaka ?]
   Owner: Osaka Shi  
   Call Sign: ?  
   Official Number: 40176  
   Laid Down: ?
   Launched: 01.03.1935
   Completed (57 GRT): ?
   Requisitioned: 01.12.1943
   Service:  
      ? ?
      SC Div 112 01.10.44-09.45
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Suzuki Zensaburo [1]鈴木善三郎1944–22.05.44
[1] Also CO of Takatsu Maru  
      CWO Yamamoto山本介三郎22.05.44–
Takunan Maru No. 2    第二拓南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWBL  
   Official Number: 43503  
   Laid Down: 01.02.1937
   Launched: 01.05.1937
   Completed (343 GRT): 25.07.1937
   Requisitioned:  
   Service:  
      SC Div 57, 4th Base Force, 4th Fleet 12.41–10.08.43
   Fate: 02.09.45. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Ichikawa市川劍三12.09.41–
      Lt Tamaki Hiroshi玉木 博05.05.44–25.11.44
      Lt Shimura志村未壽夫25.11.44–12.44
      Lt Tamaki Hiroshi玉木 博12.44–
Takunan Maru No. 5    第五拓南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWIL  
   Official Number: 43629  
   Laid Down: 01.02.1937
   Launched: 01.05.1937
   Completed (343 GRT): 17.09.1937
   Requisitioned: 16.12.1940
   Service:  
      SC Div 52 12.41–01.02.43
   Fate: 02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Shindo Kanji進藤寛治16.12.40–02.44
      Lt Hikichi Yoshio挽地義雄02.44–1945
Takunan Maru No. 6    第六拓南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWJL  
   Official Number: 43932  
   Laid Down: ?
   Launched: 31.07.1937
   Completed (343 GRT): 22.09.1937
   Requisitioned: 21.08.1940
   Service:  
      SC Div 62, 6th Base Force, 4th Fleet 12.41–15.02.43
   Fate: Sunk 10.08.45 by aircraft at Onagawa Wan. Raised and returned to owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Nobusaki Kazunori信崎一紀15.01.41–18.11.41
      Resv Lt(jg) Aoyagi Ryoichiro青柳良一郎18.11.41–31.03.44
      Lt Mishima Torao三嶋虎夫31.03.44–12.44
      Lt(jg) Koi Otoichi古井乙一12.44–01.45
      Lt Mishima Torao三嶋虎夫01.45–10.08.45
Takunan Maru No. 7    第七拓南丸 
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWKL  
   Official Number: 43933  
   Laid Down: ?
   Launched: 31.07.1937
   Completed (343 GRT): 18.09.1937
   Requisitioned: 21.08.1940
   Service:  
      ? ?
      SC Div 62, 6th Base Force, 4th Fleet 12.41–15.02.43
   Fate: Sunk 04.12.44 by aircraft from US Navy TF 50 at Kwajalein.
   Removed from Navy List: 05.12.1944
   Commanding Officers:  
Takunan Maru No. 10    第十拓南丸 
   Builder:
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWML  
   Official Number: 43653  
   Laid Down: ?
   Launched: 22.07.1937
   Completed (343 GRT): 31.08.1937
   Requisitioned: 01.12.1941
   Service:  
      ? ?
   Fate: Sunk 30.01.45 [?]
   Removed from Navy List: 10.03.1945
   Commanding Officers:  
    Resv Lt(jg) Murata Nobutake村田信孝01.12.41–20.06.44
    Lt Ishibashi Rokuro石橋六郎20.06.44–30.01.45
Tama Maru No. 8    第八玉丸  
   Builder: Hakodate Dock
   Owner: Taiyo Hogei KK  
   Call Sign: JPGJ  
   Official Number: 42334  
   Laid Down: 01.03.1936
   Launched: 01.07.1936
   Completed (279 GRT): 08.09.1936
   Requisitioned: 21.08.1940
   Service:  
      ? ?
   Fate: Sunk 22.02.44 by aircraft at Kavieng, New Ireland.
   Removed from Navy List: 10.05.1944
   Commanding Officers:  
      Resv Lt(jg) Shiomi Tsunekichi塩味常吉15.01.41–12.05.42
      Resv Lt(jg) Marutani Toshio丸谷利雄12.05.42–02.06.42
      Resv Lt(jg) Ito Shinichi伊藤眞市02.06.42–
Tateyama Maru    立山丸  
   Builder: Harima Zosensho
   Owner: Toyama Ken  
   Call Sign: JVEB  
   Official Number: 35196  
   Laid Down: 07.12.1929
   Launched: 27.02.1930
   Completed (92 GRT): 24.03.1930
   Requisitioned: 01.12.1943
   Service:  
      ? ?
   Fate: Sunk 10.06.44.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Tatsutaka Maru No. 35    第三十五辰鷹丸 
   Builder: ?
   Owner: Tatsuuma Kinkai Kisen KK  
   Call Sign: JHWB  
   Official Number: 55616  
   Laid Down: ?
   Launched: 01.10.1944
   Completed (255 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      Sasebo ND 05.06.45–9.45
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Tatsutaka Maru No. 61    第六十一辰鷹丸 
   Builder: [Osaka ?]
   Owner: Tatsuuma Kinkai Kisen KK  
   Call Sign: JGEB  
   Official Number: 53855  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (262 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Tenzan Maru No. 2 Go    第二號天山丸 
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JUGM  
   Official Number: 45488  
   Laid Down: ?
   Launched: 01.12.1938
   Completed (97 GRT): 15.12.1938
   Requisitioned: 01.11.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 01.06.1946
   Commanding Officers:  
      Lt(jg) Kawanaka Takehiro川中毅寛1944–02.05.44
      Lt(jg) Sawara Yoshimi皿良良美02.05.42–
Terukaze Maru    照風丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Chosen Sotokufu  
   Call Sign: JING  
   Official Number: C2014  
   Laid Down: 26.02.1936
   Launched: 06.06.1936
   Completed (259 GRT): 20.08.1936
   Requisitioned: 01.12.1943
   Service:  
      ? ?
   Fate: Sunk 04.11.44.
   Removed from Navy List: 10.01.1945
   Commanding Officers:  
      Lt Uneo Kinzo上野金蔵10.09.44–01.10.44
      Lt Fujii Ichiro藤井一郎01.10.44–04.11.44
Tokachi Maru    十勝丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JQNO  
   Official Number: 48196  
   Laid Down: ?
   Launched: 21.10.1940
   Completed (498 GRT): 10.03.1941
   Requisitioned: 01.12.1943
   Service:  
      ? ?
   Fate: Sunk 04.05.45.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Takahashi高橋利佐夫01.05.44–05.05.45
Tonan Maru    圖南丸  
   Builder: Kobeseikosho Harima Zosen Kojo
   Owner: Okinawa Ken  
   Call Sign: JXIB  
   Official Number: 31604  
   Laid Down: 01.07.1927
   Launched: 14.08.1927
   Completed (100 GRT): 15.10.1927
   Requisitioned: 01.12.1943
   Service:  
      ? ?
   Fate: Sunk 24.07.44.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      CWO Okawa Takeya大川武也07.44–24.07.44
Toseki Maru    東石丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JWCI  
   Official Number: 40098  
   Laid Down: ?
   Launched: 01.12.1934
   Completed (89 GRT): 15.01.1935
   Requisitioned: 10.12.1941
   Service:  
      ? ?
   Fate: Sunk 10.08.44 by USS Cod (SS-224) E of Celebes.
   Removed from Navy List: 10.12.1944
   Commanding Officers:  
      ? ?
Toshi Maru No. 3    第三利丸  
   Builder: Mihara Zosen Tekkosho
   Owner: Taiyo Hogei KK  
   Call Sign: JKYL  
   Official Number: 43860  
   Laid Down: 01.03.1937
   Launched: 21.07.1937
   Completed (298 GRT): 24.09.1937
   Requisitioned: 21.08.1940
   Service:  
      SC Div 56, 4th Base Force, 4th Fleet 12.41–01.02.42
      SC Div 56, 8th Base Force, 4th Fleet 01.02.42–14.07.42
      SC Div 56, 8th Base Force, 8th Fleet 14.07.42–24.12.42
      SC Div 56, 8th Base Force, 8th Fleet.SE Area Fleet 24.12.42–31.03.43
   Fate:   02.09.45 surrendered. Subsequently returned to original owner.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Nakamura Kouichi中村幸一15.01.41–
      Lt Shinoda Fukashi篠田不可止09.44–2.45
      Lt Sakuyama Kahei作山嘉平01.02.1945
Tsukai Maru    通海丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 43370  
   Laid Down: ?
   Launched: 01.06.1937
   Completed (88 GRT): 20.06.1937
   Requisitioned: 01.12.1941
   Service:  
      ? ?
   Fate: Sunk 16.02.45.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      Lt(jg) Kawada Ken川田 健11.43–09.44
      CWO Komiyama小宮山 國三郎09.44–11.44
      Mid Ota Souichi太田宗一11.44–12.44
      Mid Kawashima Sadae川島貞衛12.44–01.45
      Mid Ota Souichi太田宗一01.45–06.02.45
Tsuran Maru    長門丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JMVM  
   Official Number: 45204  
   Laid Down: ?
   Launched: 01.10.1938
   Completed (99 GRT): 10.10.1938
   Requisitioned: 01.11.1940
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt Higuchi Kisaburo樋口喜三郎01.45–
Ujina Maru    宇品丸  
   Builder: Uchida Zosen
   Owner: Nippon Suisan KK  
   Call Sign: JDCA  
   Official Number: 27510  
   Laid Down: ?
   Launched: 18.09.1920
   Completed (227 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 05.03.45 by aircraft off Tourane (Da Nang).
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      ? ?
Ukuru Maru    烏來丸  
   Builder: Osaka Tekkosho Honsha Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 39737  
   Laid Down: ?
   Launched: 01.10.1934
   Completed (89 GRT): 30.11.1934
   Requisitioned: 20.09.1941
   Service:  
      ? ?
   Fate: Sunk 10.10.44.
   Removed from Navy List: 10.04.1945
   Commanding Officers:  
      ? ?
Uruppu Maru    得撫丸  
   Builder: Mitsubishi Zosen Nagasaki Zosensho
   Owner: Ministry of Agriculture and Forestry, Tokyo  
   Call Sign: JDUB  
   Official Number: 31670  
   Laid Down: 14.08.1925
   Launched: 30.01.1926
   Completed (224 GRT): 15.03.1926
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 31.10.44 by aircraft off Mindoro Island.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Fujimura藤村鎮義01.10.44–31.10.44
Wabi Maru    和美丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: JDTM  
   Official Number: 45068  
   Laid Down: ?
   Launched: 01.06.1938
   Completed (99 GRT): 30.06.1938
   Requisitioned: 16.12.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Yamamoto Ryouo山本了夫23.06.42–29.06.43
      Resv Lt Okuhara Rintaro奥平 麟太郎06.44–04.11.44
      Resv Lt Matsumoto Nobuto松本信人04.11.44–03.45
      Mid Negishi Katsusaburo根岸勝三郎01.03.1945
Wakatake Maru    若竹丸  
   Builder: [Ominato, Mie ?]
   Owner: Hokkaidocho  
   Call Sign: JDTG  
   Official Number: 39932  
   Laid Down: ?
   Launched: 29.02.1936
   Completed (45 GRT): ?
   Requisitioned: 15.05.1944
   Service:  
      ? ?
   Fate: Sunk 15.06.45 by aircraft at Keelung, Taiwan.
   Removed from Navy List: 10.08.1945
   Commanding Officers:  
      ? ?
Yaryu Maru    久美丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 45210  
   Laid Down: ?
   Launched: 01.10.1938
   Completed (97 GRT): 25.10.1938
   Requisitioned: 25.07.1941
   Service:  
      ? ?
   Fate: Sunk 15.07.45 by aircraft from US Navy TF 38 at Hachinoe.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Resv Lt(jg) Amako Takeichi尼子竹一25.07.41–
      Lt Nakaoka Tadishi中岡 直01.45–03.45
      Lt Yanagihara Hikaru柳原 光03.45–15.07.45
Yatsushiro Maru    八代丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JWEB  
   Official Number: 36171  
   Laid Down: 27.03.1930
   Launched: 31.05.1930
   Completed (397 GRT): 31.07.1930
   Requisitioned: 01.12.1943
   Service:  
      ? ?
   Fate: Sunk 14.03.45 by aircraft S of Wenchow.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Watanabe Katsuhei渡邊勝平01.05.44–14.03.45
Yobai Maru    揚梅丸  
   Builder: Osaka Tekkosho Innoshima Kojo
   Owner: Nippon Suisan KK  
   Call Sign: ?  
   Official Number: 45069  
   Laid Down: ?
   Launched: 01.06.1938
   Completed (99 GRT): 30.06.1938
   Requisitioned: 05.10.1940
   Service:  
      ? ?
   Fate: Sunk 17.05.45 by aircraft of TF 57 at Ishigaki, Sakishima.
   Removed from Navy List: 30.04.1946
   Commanding Officers:  
      ? ?
Yoko Maru    陽光丸  
   Builder: Mitsubishi Jukogyo Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JWNJ  
   Official Number: 39730  
   Laid Down: 18.06.1934
   Launched: 27.09.1934
   Completed (88 GRT): 03.12.1934
   Requisitioned: 20.09.1941
   Service:  
      ? ?
   Fate: Sunk 29.03.45.
   Removed from Navy List: 10.05.1945
   Commanding Officers:  
      Resv Lt(jg) Hirata Nobuo平田信男15.09.41–01.06.42
      Resv Lt(jg) Hachiyanagi Kichinosuke八柳吉之助01.06.42–09.42
      Resv Lt(jg) Higuchi Kisaburo樋口喜三郎09.42–08.43
      CWO Kurihara Jinsuke栗原甚介08.43–01.11.43
      Mid Takeda Osamu武田長治01.11.43–07.44
      Resv Lt Inoue Hideya井上英也07.44–24.08.44
      Resv Lt Samejima Keiji鮫島 恵24.08.44–29.03.45
Yusen Maru No. 11    第十一郵船丸 
   Builder: ?
   Owner: Yusen Kinkai Kisen  
   Call Sign: JUNQ  
   Official Number: 48575  
   Laid Down: ?
   Launched: ?
   Completed: ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 05.03.45, [possibly by USS Balao (SS-285)] off Okinawa.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Yusen Maru No. 22    第二十二郵船丸 
   Builder: ?
   Owner: Yusen Kinkai Kisen  
   Call Sign: JURQ  
   Official Number: 48579  
   Laid Down: ?
   Launched: ?
   Completed (245 GRT): ?
   Requisitioned: 05.06.1945
   Sasebo Naval District 05.06.45-  
   Service:  
      ? ?
   Fate: Sunk 29.06.45.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Yusen Maru No. 26    第二十六郵船丸 
   Builder: [Kinoe, Hiroshima ?]
   Owner: Yusen Kinkai Kisen  
   Call Sign: JMHS  
   Official Number: 50015  
   Laid Down: ?
   Launched: 01.02.1944
   Completed (260 GRT): ?
   Requisitioned: 05.06.1945
   Service:  
      Sasebo Naval District 05.06.45–
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Yusen Maru No. 27    第二十七郵船丸 
   Builder: ?
   Owner: Yusen Kinkai Kisen  
   Call Sign: JYBT  
   Official Number: 51292  
   Laid Down: ?
   Launched: 1944
   Completed: ?
   Requisitioned: 01.01.1945
   Service:  
      ? ?
   Fate: Sunk 27.03.45 by aircraft of US Navy TF 58 in Kuchinoerba Bay, Kyushu.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Yusen Maru No. 31    第三十一郵船丸 
   Builder: ?
   Owner: Yusen Kinkai Kisen  
   Call Sign: JUZQ  
   Official Number: 51290  
   Laid Down: ?
   Launched: 27.04.1905
   Completed (245 GRT): ?
   Requisitioned: 25.01.1945
   Service:  
      ? ?
   Fate: Sunk 27.04.45 by aircraft of US Navy TF 58 off Amami-O-Shima.
   Removed from Navy List: 10.07.1945
   Commanding Officers:  
      ? ?
Yusen Maru No. 34    第三十四郵船丸 
   Builder: ?
   Owner: Yusen Kinkai Kisen  
   Call Sign:    JXMT  
   Official Number: 51150  
   Laid Down: ?
   Launched: 01.03.1944
   Completed (246 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: Sunk 18.09.45.
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Yusen Maru No. 41    第四十一郵船丸 
   Builder: ?
   Owner: Yusen Kinkai Kisen  
   Call Sign: JDPW  
   Official Number: 55193  
   Laid Down: ?
   Launched: 27.04.1905
   Completed: ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: Sunk 26.07.45.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Yusen Maru No. 42    第四十二郵船丸 
   Builder: [Muya, Tokushima ?]
   Owner: Yusen Kinkai Kisen  
   Call Sign: JDMW  
   Official Number: 55186  
   Laid Down: ?
   Launched: 01.07.1944
   Completed (260 GRT): ?
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Yusho Maru No. 10    第拾勇昌丸  
   Builder: [Ominato, Mie ?]
   Owner: Seitaro Yamashita  
   Call Sign: JAWP  
   Official Number:48782  
   Laid Down: ?
   Launched: 01.09.1941
   Completed (184 GRT): ?
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: Sunk 12.10.44.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Zao Maru No. 1    第一藏王丸  
   Builder: [Hachinohe ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JNQR  
   Official Number: 50917  
   Laid Down: ?
   Launched: 01.08.1943
   Completed: 28.03.1944
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Zao Maru No. 2    第二藏王丸  
   Builder: [Hachinohe ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JNPR  
   Official Number: 50918  
   Laid Down: ?
   Launched: 01.09.1943
   Completed (247 GRT): 28.03.1944
   Requisitioned: 05.06.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Zao Maru No. 8    第八藏王丸  
   Builder: [Ofunato, Iwate ?]
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEDV  
   Official Number: 51938  
   Laid Down: ?
   Launched (247 GRT): 01.10.1943
   Completed: 29.05.1944
   Requisitioned: 05.06.1945
   Service:  
      Kure Naval District  05.06.45-09.08.45
   Fate: Sunk 09.08.45.
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Zao Maru No. 9    第九藏王丸  
   Builder: [Ofunato, Iwate ?]
   Laid Down:  ?
   Launched: 01.10.1943
   Completed (247 GRT): 26.06.1944
   Builder:
   Owner: Mitsui Kinkai Kisen KK  
   Call Sign: JEEV  
   Official Number: 51939  
   Requisitioned: 15.05.1945
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.08.1946
   Commanding Officers:  
      ? ?
Zuiho Maru    瑞鳳丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nanyo Cho  
   Call Sign: JNAB  
   Official Number: 36652  
   Laid Down: ?22.09.30
   Launched: 20.12.1930
   Completed (183 GRT): 31.01.1931
   Requisitioned: 10.06.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      ? ?
Zuiko Maru    瑞光丸  
   Builder: Mitsubishi Zosen Hikoshima Zosensho
   Owner: Nippon Suisan KK  
   Call Sign: JJAF  
   Official Number: 37944  
   Laid Down: 26.08.1932
   Launched: 04.10.1932
   Completed (88 GRT): 19.11.1932
   Requisitioned: 05.10.1940
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      Lt(jg) Oikawa及川 仁右ヱ門10.43–30.10.43
      Lt(jg) Wada Juro和田十郎30.10.43–09.44
      Lt(jg) Iwasa Takeji岩佐竹次09.44–11.44
      CWO Murakami Tousaku村上藤作11.44–
Zuiyo Maru    瑞鷹丸  
   Builder: Tsurumi Seitetsu Zosen
   Laid Down:  16.02.1937
   Owner: Kantokyoku  
   Call Sign: JQEG  
   Official Number: K 641  
   Launched: 13.03.1937
   Completed (129 GRT): 23.04.1937
   Builder:
   Requisitioned: 01.02.1944
   Service:  
      ? ?
   Fate: ?
   Removed from Navy List: 03.05.1947
   Commanding Officers:  
      CWO Nojima Mutsumi能島睦美30.04.44–
 

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